Undo Bootstrap button icon CSS alteration

new v2.2.2 fixes icon problem, so removed the alteration in default.css
Trim trailing blanks
Update Payments modal for Bootstrap 2.2.2

Fix the link and close buttons so it works in 2.2.2
Add admin tab to teams index

Instead of plain link above the list
Trim trailing blanks
Tabbed Players index

Move current and ex players onto different tabs
Fix indentation