maplecroft hacks for group_by, formatting and pie slices
 increase version for dev version
add global charts variable
use simplejson explicitly, don't go through django
update simplejson requirements
add series translation tags when required
translate *all* strings when translating
provide a means of determining original point names pre-translation
don't mark annotations on a queryset as invalid data
validate extra fields too
version increment
Add git ignore file
Don't assume we can always translate
Cast to unicode, not string to support non-ascii chars
Merge branch 'development'