x15

uild 15
- 1) Add All Contacts just adds all contacts to list.
2) Clear List in case you change your mind after adding all contacts,
otherwise singly deleting all hundreds of contacts would suck.
3) Added indexed sections to main list sorted alphabetically to make
managing lots of callers easier.
- Hide/show indexes so entire swipe area visible, and adjust selection
locations if icons move.
- Disabled selections for main view cells.
- Fixed error deleting cells now that we have index sections.