Added Primer funtionality to calculate primer characteristics like Tm, GC%, and length
updated import from django.conf.urls.defaults to django.conf.urls because of deprecation warning
Added HTTP redirects to ease switching between a static folder and a CDN
Updated the Design Class to prevent needing to create a new object each time it is used.
Adding the primer html files.
Removed N,C and 5',3' annotation in results pages because it was a pain to select and copy sequences without getting their annotations as well.