Convert to Android Studio

* Remove Eclipse files
* Remove Ant build files
Remove third party cruft
Add braces to control flow statements
Add missing @Override annotations
Remove analytics

* Remove findbugs
* Remove localytics
* Remove crittercism
* Remove anonymous statistics menu entry
* Remove coarse location permission
Remove welcome walkthrough, sync upgrade prompt
Remove Astrid.com synchronization
Remove sharing activity, Facebook SDK
Remove help info popovers
Remove comment button from navbar
Change package, remove billing and cloud messaging
Remove feedback prompt, what's new dialog
Update dev API key, enable power pack features
Fix 'field phone calls' functionality
Remove social encouragement menu item
Remove contact picker menu item
Remove show list members menu item
Remove social filters, people menu item
Remove people from quick add control set
Remove list sharing