fixed migration
add comments to all the new tests.
test contributor urls additionally with an editor. check some responses for expected results.
Merge pull request #406 from karyon/test_coverage

raise your test coverage
fix #400: preview and voting page look alike
moved parts of the voting page creation to functions; use request data to go back from preview page
Merge pull request #420 from janno42/contributor_preview

Preview and voting page look alike
fix two unstyled buttons. fixes #270
fix half of the menu being gone in /fsr/user/x/delete. fix the username missing in the confirmation question.
show alerts after successfully deleting things. fixes #325
make faq pages redirect to faq index after saving
get the errors, warnings, infos and success-messages straight
initial cleanup and refactoring for the importer overhaul