Addressed Issues #164, #185, #186

* Added ability to add beers and brewers through the Admin UI
* Added keg view in Admin UI
* Added ability to record "spills" per keg
** Allows users to account for X% full kegs when tapped
** Allows users to account for any spillage while tapped
** Allows users to "empty" keg when kicked
* Fixed bug where "End Keg" didn't save datetime
* Fixed bug where Keg "finished" parameter was set on tapping and never changed
** It now is bool 0 on tapping and bool 1 on ending

I think that's it...