Enable prime tower for PLA 0.8

This was deemed necessary by the materials tests.

resources/quality/ultimaker3/um3_aa0.8_PLA_Draft_Print.inst.cfg

@@ -26,6 +26,7 @@ material_final_print_temperature = =max(-273.15, material_print_temperature - 15
 material_initial_print_temperature = =max(-273.15, material_print_temperature - 10)
 material_print_temperature = =default_material_print_temperature + 10
 material_standby_temperature = 100
+prime_tower_enable = True
 support_angle = 70
 support_line_width = =line_width * 0.75
 support_pattern = ='triangles'

resources/quality/ultimaker3/um3_aa0.8_PLA_Superdraft_Print.inst.cfg

@@ -27,6 +27,7 @@ material_final_print_temperature = =max(-273.15, material_print_temperature - 15
 material_initial_print_temperature = =max(-273.15, material_print_temperature - 10)
 material_print_temperature = =default_material_print_temperature + 15
 material_standby_temperature = 100
+prime_tower_enable = True
 raft_margin = 10
 support_angle = 70
 support_line_width = =line_width * 0.75

resources/quality/ultimaker3/um3_aa0.8_PLA_Verydraft_Print.inst.cfg

@@ -27,6 +27,7 @@ material_final_print_temperature = =max(-273.15, material_print_temperature - 15
 material_initial_print_temperature = =max(-273.15, material_print_temperature - 10)
 material_print_temperature = =default_material_print_temperature + 10
 material_standby_temperature = 100
+prime_tower_enable = True
 support_angle = 70
 support_line_width = =line_width * 0.75
 support_pattern = ='triangles'