Move web code under a sub directory
Move java app classes under com.cantstopthesignals.five package.
Initial android app checkin
android: Calendar and event loading.
Misc improvements:

* Add support for drag-and-drop events
* Add Ctrl+S keyboard shortcut for saving
* Increase button sizes
* Remove drag button
* Add a create event gutter to the rights of timeline
Misc dragging improvements

* Add a hitbox margin around event cards for drag start.
* Fix shift key behavior
* Cancel clicks during drag operations.
* Dragging of start and end controls