[REF] Replace table.formcolor with Bootstrap form divs.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@48972 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] added brute force and failure keywords; change unsuccessful_logins_invalid default from -1 to 50; fixed a typo.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@48973 b456876b-0849-0410-b77d-98878d47e9d5