[REF] Replacing form.simple with Bootstrap construction and classes.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@49230 b456876b-0849-0410-b77d-98878d47e9d5
[REF] Side columns' div.content horizontal whitespace rules conflict with Bootstrap, so removed.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@49231 b456876b-0849-0410-b77d-98878d47e9d5