changes some word-usage and the use of capital letters

Contributes to: issue CURA-129

resources/qml/Actions.qml

@@ -93,7 +93,7 @@ Item
     Action
     {
         id: settingsAction;
-        text: catalog.i18nc("@action","Configure Printers");
+        text: catalog.i18nc("@action","Manage Printers");
         iconName: "configure";
     }
 
@@ -149,21 +149,21 @@ Item
     Action
     {
         id: groupObjectsAction
-        text: catalog.i18nc("@action","Group objects");
+        text: catalog.i18nc("@action","Group Objects");
         enabled: UM.Scene.numObjectsSelected > 1 ? true: false
     }
 
     Action
     {
         id: unGroupObjectsAction
-        text: catalog.i18nc("@action","Ungroup objects");
+        text: catalog.i18nc("@action","Ungroup Objects");
         enabled: UM.Scene.isGroupSelected
     }
     
     Action
     {
         id: mergeObjectsAction
-        text: catalog.i18nc("@action","Merge objects");
+        text: catalog.i18nc("@action","Merge Objects");
         enabled: UM.Scene.numObjectsSelected > 1 ? true: false
     }
 
@@ -208,7 +208,7 @@ Item
     Action
     {
         id: openAction;
-        text: catalog.i18nc("@action","Load file");
+        text: catalog.i18nc("@action","Open File");
         iconName: "document-open";
         shortcut: StandardKey.Open;
     }
@@ -224,7 +224,7 @@ Item
     Action
     {
         id: showEngineLogAction;
-        text: catalog.i18nc("@action","Show engine &log...");
+        text: catalog.i18nc("@action","Show Engine &Log...");
         iconName: "view-list-text";
     }
 }

resources/qml/Cura.qml

@@ -112,6 +112,7 @@ UM.MainWindow
                 MenuItem { action: actions.deleteSelection; }
                 MenuItem { action: actions.deleteAll; }
             }
+
             Menu
             {
                 title: catalog.i18nc("@title:menu","&View");
@@ -297,7 +298,10 @@ UM.MainWindow
             {
                 id: openFileButton;
                 //style: UM.Backend.progress < 0 ? UM.Theme.styles.open_file_button : UM.Theme.styles.tool_button;
-                style: UM.Theme.styles.open_file_button
+                //style: UM.Theme.styles.open_file_button
+                text: catalog.i18nc("@action:button","Open File");
+                iconSource: UM.Theme.icons.open
+                style: UM.Theme.styles.tool_button;
                 tooltip: '';
                 anchors
                 {
@@ -337,7 +341,6 @@ UM.MainWindow
                     right: sidebar.left;
                     rightMargin: UM.Theme.sizes.window_margin.width;
                 }
-                //: View Mode toolbar button
                 text: catalog.i18nc("@action:button","View Mode");
                 iconSource: UM.Theme.icons.viewmode;
 

resources/qml/SaveButton.qml

@@ -67,7 +67,7 @@ Rectangle {
         color: UM.Theme.colors.sidebar_header_bar
         Label{
             id: printJobTextfieldLabel
-            text: catalog.i18nc("@label:textbox", "Printjob name");
+            text: catalog.i18nc("@label:textbox", "Printjob Name");
             anchors.left: parent.left
             anchors.leftMargin: UM.Theme.sizes.default_margin.width;
             anchors.verticalCenter: parent.verticalCenter

resources/qml/SidebarHeader.qml

@@ -27,7 +27,7 @@ Item
 
         Label{
             id: settingsModeLabel
-            text: catalog.i18nc("@label:listbox","Print setup: ");
+            text: catalog.i18nc("@label:listbox","Print Setup: ");
             anchors.left: parent.left
             anchors.leftMargin: UM.Theme.sizes.default_margin.width;
             anchors.verticalCenter: parent.verticalCenter