Update event.php

Adds:

+ smart theming
+ inputbutton and inputbox css class
+ drop functionality
+ bye functionality
+ pauper krew only (will become clan functionality)
+ pre-registration cap functionality
+ toggle to choose to allow players to enter match results
+ automated events functionality
+ League functionality 
+ Standings
+ various form updates to make running events easy

Fixes:

+ various optimizations and code formatting changes
+ change poorly named Steward to Series Organizer
+ change kvalue names for elo rating system to something more meaningful