Update main page for 2015 copy.
Update team bid form to KK28.
Update dates for KK28.

Add team bid dates.
Bump year on all.
Update team bid payment page for KK28.

Include page title.
Use references to central `$date` variable.
Revert adding Hat Draw details.
Whitespace fixup.
Update bidding.php to KK28.

Remove some dates we are not sure of yet.
Update the dates we know (via the centralized `$date`.
Centralize annual strings.

Declare the strings like 'KKXX' and Kaimana 'XX' in a central variable.  Then reference this variable in front-end pages so that every year the number of the tournament only has to be changed in one place.