Improve translation context for some labels

These translations went sort of wrong in the Turkish translation, because the context was unclear. I've tried to clarify it better.

Contributes to issue CURA-570.

plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml

@@ -31,7 +31,7 @@ Item {
             spacing: UM.Theme.getSize("default_margin").width
             Label
             {
-                text: catalog.i18nc("@label", "Print model with")
+                text: catalog.i18nc("@label Followed by extruder selection drop-down.", "Print model with")
                 anchors.verticalCenter: extruderSelector.verticalCenter
 
                 color: UM.Theme.getColor("setting_control_text")

resources/i18n/de/cura.po

@@ -919,7 +919,7 @@ msgid "Cancel"
 msgstr "Abbrechen"
 
 #: /home/ruben/Projects/Cura/plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml:34
-msgctxt "@label"
+msgctxt "@label Followed by extruder selection drop-down."
 msgid "Print model with"
 msgstr "Modell drucken mit"
 
@@ -1781,12 +1781,12 @@ msgid ""
 msgstr "Einige ausgeblendete Einstellungen verwenden Werte, die von ihren normalen, berechneten Werten abweichen.\n\nKlicken Sie, um diese Einstellungen sichtbar zu machen."
 
 #: /home/ruben/Projects/Cura/resources/qml/Settings/SettingItem.qml:59
-msgctxt "@label"
+msgctxt "@label Header for list of settings."
 msgid "Affects"
 msgstr "Hat Einfluss auf"
 
 #: /home/ruben/Projects/Cura/resources/qml/Settings/SettingItem.qml:64
-msgctxt "@label"
+msgctxt "@label Header for list of settings."
 msgid "Affected By"
 msgstr "Wird beeinflusst von"
 

resources/i18n/en/cura.po

@@ -953,7 +953,7 @@ msgid "Cancel"
 msgstr "Cancel"
 
 #: /home/ruben/Projects/Cura/plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml:34
-msgctxt "@label"
+msgctxt "@label Followed by extruder selection drop-down."
 msgid "Print model with"
 msgstr "Print model with"
 
@@ -1852,12 +1852,12 @@ msgstr ""
 "Click to make these settings visible."
 
 #: /home/ruben/Projects/Cura/resources/qml/Settings/SettingItem.qml:59
-msgctxt "@label"
+msgctxt "@label Header for list of settings."
 msgid "Affects"
 msgstr "Affects"
 
 #: /home/ruben/Projects/Cura/resources/qml/Settings/SettingItem.qml:64
-msgctxt "@label"
+msgctxt "@label Header for list of settings."
 msgid "Affected By"
 msgstr "Affected By"
 

resources/i18n/es/cura.po

@@ -919,7 +919,7 @@ msgid "Cancel"
 msgstr "Cancelar"
 
 #: /home/ruben/Projects/Cura/plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml:34
-msgctxt "@label"
+msgctxt "@label Followed by extruder selection drop-down."
 msgid "Print model with"
 msgstr "Imprimir modelo con"
 
@@ -1781,12 +1781,12 @@ msgid ""
 msgstr "Algunos ajustes ocultos utilizan valores diferentes de los valores normales calculados.\n\nHaga clic para mostrar estos ajustes."
 
 #: /home/ruben/Projects/Cura/resources/qml/Settings/SettingItem.qml:59
-msgctxt "@label"
+msgctxt "@label Header for list of settings."
 msgid "Affects"
 msgstr "Afecta a"
 
 #: /home/ruben/Projects/Cura/resources/qml/Settings/SettingItem.qml:64
-msgctxt "@label"
+msgctxt "@label Header for list of settings."
 msgid "Affected By"
 msgstr "Afectado por"
 

resources/i18n/fi/cura.po

@@ -919,7 +919,7 @@ msgid "Cancel"
 msgstr "Peruuta"
 
 #: /home/ruben/Projects/Cura/plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml:34
-msgctxt "@label"
+msgctxt "@label Followed by extruder selection drop-down."
 msgid "Print model with"
 msgstr "Tulosta malli seuraavalla:"
 
@@ -1781,12 +1781,12 @@ msgid ""
 msgstr "Jotkin piilotetut asetukset käyttävät arvoja, jotka eroavat normaaleista lasketuista arvoista.\n\nTee asetuksista näkyviä napsauttamalla."
 
 #: /home/ruben/Projects/Cura/resources/qml/Settings/SettingItem.qml:59
-msgctxt "@label"
+msgctxt "@label Header for list of settings."
 msgid "Affects"
 msgstr "Koskee seuraavia:"
 
 #: /home/ruben/Projects/Cura/resources/qml/Settings/SettingItem.qml:64
-msgctxt "@label"
+msgctxt "@label Header for list of settings."
 msgid "Affected By"
 msgstr "Riippuu seuraavista:"
 

resources/i18n/fr/cura.po

@@ -919,7 +919,7 @@ msgid "Cancel"
 msgstr "Annuler"
 
 #: /home/ruben/Projects/Cura/plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml:34
-msgctxt "@label"
+msgctxt "@label Followed by extruder selection drop-down."
 msgid "Print model with"
 msgstr "Imprimer le modèle avec"
 
@@ -1781,12 +1781,12 @@ msgid ""
 msgstr "Certains paramètres masqués utilisent des valeurs différentes de leur valeur normalement calculée.\n\nCliquez pour rendre ces paramètres visibles."
 
 #: /home/ruben/Projects/Cura/resources/qml/Settings/SettingItem.qml:59
-msgctxt "@label"
+msgctxt "@label Header for list of settings."
 msgid "Affects"
 msgstr "Touche"
 
 #: /home/ruben/Projects/Cura/resources/qml/Settings/SettingItem.qml:64
-msgctxt "@label"
+msgctxt "@label Header for list of settings."
 msgid "Affected By"
 msgstr "Touché par"
 

resources/i18n/it/cura.po

@@ -919,7 +919,7 @@ msgid "Cancel"
 msgstr "Annulla"
 
 #: /home/ruben/Projects/Cura/plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml:34
-msgctxt "@label"
+msgctxt "@label Followed by extruder selection drop-down."
 msgid "Print model with"
 msgstr "Modello di stampa con"
 
@@ -1781,12 +1781,12 @@ msgid ""
 msgstr "Alcune impostazioni nascoste utilizzano valori diversi dal proprio valore normale calcolato.\n\nFare clic per rendere visibili queste impostazioni."
 
 #: /home/ruben/Projects/Cura/resources/qml/Settings/SettingItem.qml:59
-msgctxt "@label"
+msgctxt "@label Header for list of settings."
 msgid "Affects"
 msgstr "Influisce su"
 
 #: /home/ruben/Projects/Cura/resources/qml/Settings/SettingItem.qml:64
-msgctxt "@label"
+msgctxt "@label Header for list of settings."
 msgid "Affected By"
 msgstr "Influenzato da"
 

resources/i18n/nl/cura.po

@@ -919,7 +919,7 @@ msgid "Cancel"
 msgstr "Annuleren"
 
 #: /home/ruben/Projects/Cura/plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml:34
-msgctxt "@label"
+msgctxt "@label Followed by extruder selection drop-down."
 msgid "Print model with"
 msgstr "Model printen met"
 
@@ -1781,12 +1781,12 @@ msgid ""
 msgstr "Een aantal verborgen instellingen gebruiken andere waarden dan hun normale berekende waarde.\n\nKlik om deze instellingen zichtbaar te maken."
 
 #: /home/ruben/Projects/Cura/resources/qml/Settings/SettingItem.qml:59
-msgctxt "@label"
+msgctxt "@label Header for list of settings."
 msgid "Affects"
 msgstr "Beïnvloedt"
 
 #: /home/ruben/Projects/Cura/resources/qml/Settings/SettingItem.qml:64
-msgctxt "@label"
+msgctxt "@label Header for list of settings."
 msgid "Affected By"
 msgstr "Beïnvloed door"
 

resources/i18n/tr/cura.po

@@ -919,7 +919,7 @@ msgid "Cancel"
 msgstr "İptal et"
 
 #: /home/ruben/Projects/Cura/plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml:34
-msgctxt "@label"
+msgctxt "@label Followed by extruder selection drop-down."
 msgid "Print model with"
 msgstr "........... İle modeli yazdır"
 
@@ -1781,12 +1781,12 @@ msgid ""
 msgstr "Gizlenen bazı ayarlar normal hesaplanan değerden farklı değerler kullanır.\n\nBu ayarları görmek için tıklayın."
 
 #: /home/ruben/Projects/Cura/resources/qml/Settings/SettingItem.qml:59
-msgctxt "@label"
+msgctxt "@label Header for list of settings."
 msgid "Affects"
 msgstr "Etkileri"
 
 #: /home/ruben/Projects/Cura/resources/qml/Settings/SettingItem.qml:64
-msgctxt "@label"
+msgctxt "@label Header for list of settings."
 msgid "Affected By"
 msgstr ".........den etkilenir"
 

resources/qml/Settings/SettingItem.qml

@@ -56,12 +56,12 @@ Item {
 
         if(affects_list != "")
         {
-            tooltip += "<br/><b>%1</b>\n<ul>\n%2</ul>".arg(catalog.i18nc("@label", "Affects")).arg(affects_list)
+            tooltip += "<br/><b>%1</b>\n<ul>\n%2</ul>".arg(catalog.i18nc("@label Header for list of settings.", "Affects")).arg(affects_list)
         }
 
         if(affected_by_list != "")
         {
-            tooltip += "<br/><b>%1</b>\n<ul>\n%2</ul>".arg(catalog.i18nc("@label", "Affected By")).arg(affected_by_list)
+            tooltip += "<br/><b>%1</b>\n<ul>\n%2</ul>".arg(catalog.i18nc("@label Header for list of settings.", "Affected By")).arg(affected_by_list)
         }
 
         return tooltip