fix settings.CONTEXT_PROCESSORS reference in docs
Merge pull request #260 from dimagi/docfix

fix settings.CONTEXT_PROCESSORS reference in docs
add a stub send() function to BackendBase for documentation purposes
Merge pull request #261 from dimagi/backend-base-api

add a stub send() function to BackendBase for documentation purposes
fix kannel backend module path
prep for 0.11.1 release
Merge remote-tracking branch 'origin/master' into feature/httptester-update

Branch: feature/httptester-update