GPII-669: The save button in PCP is now only shown when any settings change has been made.
GPII-669: Save button styled to be easier to see.
GPII-669: Save button showing when change is made, hiding when clicked and shown when another change is made.
Merge https://github.com/GPII/prefsEditors into gpii-669
GPII-669: Listener for any setting changed moved to 'modelListeners: {...}'.
GPII-669: onSave used instead of custom event adding + small name change.
GPII-669: Save button styling finished. Also changed couple of names, changed model listener.
GPII-669: Added a comment, explaining why modelListeners: {...} isn't used, but less declarative way chosen.
GPII-669: Removed saving listener and minor change in model listener.
Merge pull request #49 from radmanovi4/gpii-669

Gpii 669: Save and Apply in PCP should be shown only when changes are made and styled differently