added additional third party statics: chosen, flot, and sb-admin. currently only chosen is used.

Also included some changes to base.html to make use of chosen.
added add_payments.html and included in urls/py
addition of third party statics: chosen, sb-admin and flot.

only chosen is currently used.
added add_payments.html including adition to urls.py
some modification on the base to adjust to the need of add_payments
Merge branch 'master' of https://github.com/dsysme/musar

Conflicts:
	payments/templates/base.html
Changes done to base.html to needed to use chosen in add_payments