Add pixi 2D webgl to project libraries
Force webgl rendering using command line override
Show reveal button with swipe up clear

This should fix issue #240.
Revert "Add pixi 2D webgl to project libraries"

This reverts commit 387a5f6ddda594f5f3bdacf6f1f968469ccfac9a.
Hide teaching buttons when resetting or retrying
Move fetch call from sync model to collections
Cleaned up stuff to prepare for better syncing
Updated login binding to match sync changes
Remove box-shadow from modal

In general usual box-shadow on mobile devices seems to cause noticeable
performance issues.
Improve initial download progress flow
Replace login with signing in modal
Listen for changes to vocablists and schduler
Fixed and simplified direct scheduler inserting
Several changes to application load syncing process
Separate other batch calls out of main items fetch
Remove modal during home sync button pressed
Update vocablists locally immediately on change
Fixed hinting issue when disable removing list
Added bootstrap notifications component library
Change login and logout message text coloring