auto save and retrieve text onAttach and onDetach
add a unique id to saved text
move code to a new helper: AutoSaveTextHelper (could be reused in other TextViews)
clear saved test on reply
auto save integration in Reader comments list
auto save integration in ViewPost comment field
never auto fill the empty string
new AutoSaveEditText widget
add auto save text in login and new user screens
Merge branch 'develop' into issue/2048-autosave-edittext

Conflicts:
	WordPress/src/main/res/values/attrs.xml
remove superfluous autosave group
add autosave to wpcom blog creation
factorize some code in AutoSaveTextHelper
fix new blog and new user auto completion
move storage from sharedPreferences to sqlite - to purge old entries
Merge branch 'develop' into issue/2048-autosave-edittext
make MAX_ENTRIES private
Removed duplicate intent extras
Removed unnecessarily incoming animation
Fade out animation no longer hides outgoing activity (this was causing the flicker)