Provide blocks for extra CSS and JS in base.html
Provide blocks for extra CSS and JS in base.html

This allows re-users to keep using the main mapit template, but add in
their own extra javascript or css to override or extend the existing
stuff.

Code4SA/mapit,chris48s/mapit,opencorato/mapit,opencorato/mapit,Code4SA/mapit,opencorato/mapit,chris48s/mapit,chris48s/mapit,Code4SA/mapit