Add stats sorting options. Doesn't do anything at the moment yet.
Put stat linked hash map insert into its own method.
Setup cases for sorting stats, added extra constructor w/ new parameter
for picking which stat to sort. default (null) is by oprs at the moment.
Implement basic menu functionality.
(Still got a couple bugs to iron out...)
Fix stats help accidentally disappearing.
Fix category reset bug on rotation
Rename TeamSortByOPRComparator since we're not just comparing OPRs anymore.
Also did a mass 'Optimize Imports' on the entire project to remove unused imports.
Add extra click feedback removers where necessary.
Merge remote-tracking branch 'upstream/master' into sort_stats
Add instance variables to stat/stat list elements.
Begin moving stat sorting to separate adapter, revert back to old PopulateEventStats.
Fix adapter info not updating, revert PopulateEventStats constructor
since we need the current stat sort by item when rotating the screen and refreshing data.
Convert stat sort settings to alert dialog
Add cancel button to stats sort alert dialog.
Add stat sort by team number support.
Add placeholder team name for legacy teams in StatsListElement.
Merge remote-tracking branch 'upstream/master' into sort_stats

Conflicts:
	android/src/main/java/com/thebluealliance/androidclient/background/match/PopulateMatchInfo.java
Merge pull request #195 from brycematsuda/sort_stats

Basic event stats sorting implementation