initial work on concrete resourcebase
make resource fk nullable
bump to base module in topicCategory fixtures
move to new ContactRole model
other minor adjustments
put fixtures where should be
fix more imports
inherit from Resourcebase manager
some cleanup
Added info about alpha4 to changelog
move catalogue signals to ResourceBase
roll back to Role in people
clean
Handle if the download folder already exists
get rid of the search pages
use search engine in home for layers
unify the rating functions in the proper template
add the rate.js file
Merge remote-tracking branch 'simod/master' into base
Use a try except ImportError to import the pushd function