[ENH]: use new icon system for the admin users table. get rid of some {capture} usage in the process

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@53275 b456876b-0849-0410-b77d-98878d47e9d5
[REF] Clean templates formatting so they are legible and maintainable again

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@53276 b456876b-0849-0410-b77d-98878d47e9d5