used confirm dialog for some actions, e.g. unfollow, block, delete list etc
improved ui.
auto complete now support nick name
added acra lib, twidere will open email client when it crashed.
removed unused MultiSelectActivity
improved follow/unfollow feature
used user_id for filters
implemeted send multiple drafts feature
fixed npe
bug fixes
improved unread count displaying
Merge remote-tracking branch 'upstream/dev' into dev