UnifiedEmail: Supported Email search function

1. Use the search function to search the local mail.
2. Search results interface:
   Filters All, Subject, Sender, Receiver
   click on the different filter,
   and search the corresponding results.
   All for the default selection filter.
3. Search results interface: slide switch filter,
   remove "sliding removing a single mail" effect.
4. Search results interface: alternative condition,
   slide switch filter, cancel the multiselect state.
5. Search results interface: UI-filters layout,
   sliding effect, search, according to the number of
   search results highlighted.

Change-Id: I2af40a386de55e221878bd346cda3ea1cff8f2fa
CRs-Fixed: 1023498
25 files changed