login servlet and connected user tracking
Added MySQL connector, code in data source to get the appropriate rows. Right now it just does pitchers, because the UI only has pitching categories.
Merge remote-tracking branch 'origin/master'
client login
add team token to player data request
Made the MySQL dependency more Maven-y.
Merge branch 'master' of https://github.com/mayhew3/DraftTower

Conflicts:
	src/main/java/com/mayhew3/drafttower/server/UnclaimedPlayerDataSource.java
Added column name to the Player Column class, so we can iterate through them all and only add them to the map if the column is non-null. Now works with Batters (6 columns being null for batters and pitchers)
refactor db connection code.

To run this from IJ, you need to go in to your Jetty run config and check "etc/jetty-plus.xml".
Merge branch 'master' of https://github.com/mayhew3/DraftTower

Conflicts:
	src/main/java/com/mayhew3/drafttower/server/UnclaimedPlayerDataSource.java
add missing file
clean up DB resources
protect commissioner-only commands
refactor and clean up UI
use DraftStatus object in controller
refactor client event handling
team order display
refactor TeamInfo
ui for picking players
fix play/pause button and draft starting behavior