Started redesigning to meet Material guidelines and new Put.io site design

Work in progress, most things are ugly and/or crash.
More progress, particularly on FileDetails
Tweaks to FileDetails, more Material progress
Fixed dialog styles, added MP4 status to FileDetails, possibly fixed Cast
Removed Share, updated translations
Fixed fragment menu items not showing, other bug fixes

Fixed back button logic.
Added logo silhouette to tablet view when no file is opened.
Fixed colors of some menu items.
Added Accessed indicators to Files list, other bug/UI fixes
More redesign progress

Started switching Files list to RecyclerView, long-press not working yet.
Fixed tablet Files view disappearing on rotate. It's now a nested fragment.
Added some fake shadows on pre-Lollipop.
Switched AutoScaleTextView to AutoResizeTextView.
Updated CastCompanionLibrary
Finished fixing contextual menu for Files

Small UI tweaks.
Removed some old resources.
On tablets, close FileDetails if the file is deleted
Fixed downloading multiple files
Updated TransfersActivity to use a Toolbar
3.0 beta 1
Fixed checked items staying checked after leaving folder, other fixes

When renaming a file, undo button is now disabled when no changes have been made.
Casting still has UI issues.
Fixed Cast bar making main fragments disappear, and fixed a crash
Updated translations
Added padding for FAB in Files and Transfers
Tweaked file selection menus
Fixed Transfers battery drain, tweaked FAB padding