#18928  Improve the UI of Notification settings

initial commit
#18928 - assets + optimization

- new graphic assets
- minor optimization
#18928 - layout improvements
#18928 - more layout improvements

- fixed file naming
- layout changes
#18928 - 1:1 chat section fixes
Merge branch 'master' of git://github.com/worklist/cp_ios into 18928

Conflicts:
	candpiosapp.xcodeproj/project.pbxproj
#18928 - CR Fixes

- fixed indentation
- fixed naming for checked label grouping in CPCheckedLabel
- added property (UIImageView) for check-mark image in CPCheckedLabel.m
- fixed property declaration to ARC type in CPSwitch.m
- refactored animation in CPSwitch.m
- removed unnecessary casting in NotificationsTableViewController.m
Merge pull request #191 from stojce/18928

Code Review for Job #18928