remove dual layout view in the Media Browser
set horizontal and vertical grid spacing
remove MultiSelectGridView
replace inefficient List by a Set
first step at replacing MultiSelectGridView
move grid related code from activity to fragment and remove dead code
fix grid margins
remove unused delete menu
hide filter spinner when CAB is visible
move onDeleteMedia from a callback to MediaBrowserActivity deleteMedia, use a Set instead of a List
add delete icon
style cleanup
reuse an ArrayList instead of a set (order used in galleries and ArrayList needed for serialization)
GalleryPicker fix
fix single selection in MediaGalleryPickerActivity
remove unused imports and old comment
replace _Are you sure..._ confirmation strings
only keep one list of selected items in the adapter and use _%d selected_ as CAB title
make the string _Displaying media from ... to ..._ translatable
remove signout dialog message