Copied over basics from hhu-adhocracy branch
Rename user import from "import" to .. userimport
Fix and extend URL tests
Update importexport (intermediary commit)
Merge test_url from develop
Merge branch 'develop' into feature-importexport
Merge branch 'develop' into feature-importexport
Clean up some more
Clean up some more
add tests for export
importexport: extend tests and fix bugs
Merge branch 'develop' into feature-importexport

Conflicts:
	setup.py
Merge branch 'develop' into feature-importexport
Simplify checks
Use cgi.escape instead of markupsafe.escape

We don't declare a dependency to markupsafe, so we shouldn't use it, especially when cgi.escape is in the stdlib.
Remove unused mako option

grep -r escape adhocracy/templates   doesn't find a single invocation of this method. Furthermore, we don't actually depend on markupsafe, so this has always worked by accident.
Remove otudated workaround. We now depend on sqlite >=0.7.9
Depend on cssselect for testbrowser
moved PasteScript to normal dependencies to stop it from appearing in the adhocracy source code directory

Conflicts:
	setup.py
Fix norm/proposal assignment with relative_urls

Addendum to e74eaf6b0f0bda02dd3a69ac2e0065c6071c6503