Switch from ActionBar to Toolbar and add animation panel

The ActionBar has been replaced with a static top Toolbar to
take advantage of more support library features such as the
Navigation Drawer. There is now a side drawer that contains
the outline of the AnimationFragment. To achieve better UI
consistency, other panels are also likely to be moved to
side drawers in the future.
Update licence
Add work in progress animation system

Created an Animation Fragment and most of the necessary code
to go with it. The Layer code has had to be modified to work
with the animation system. This has resulted in discovering
many layer related bugs when switching frames.
Add auto-save and file picker

Files auto-save every 60 seconds and also when stopping the
app. Added a file picker in the overflow menu to handle file
changing.

The GUI to access animation and layers have been temporarily
disabled. The will we re-enabled when more issues have been
ironed out.
Add Toolbox animation

Tapping on the tool menu item will animate the ToolboxFragment
down and show the tools with a 'bubble' transition. Similarly,
on hiding the Toolbox, this animation goes in reverse.
Add Palette animation and add theming drawables