remove most parts of api v1
Make API authentication tests use API v2

API v1 has been removed.
Fix flash message design
Remove API v1 controllers
Add cuke
Fix success message for group membership update
Fix success message for group membership delete
Remove rsb API templates
Fix api/v2/projects/level_list
refactor session store initializer
set the path attribute of the session cookie when a relative url root is set
config can contain an empty string. use presence to convert that to nil. pass it directly to :path. rails handles the nil case with its default like before.
Merge pull request #1127 from opf/fix/3775_fix_group_success_messages

[FIX] 3775 fix group success messages
Fix copyright year in single file
adds routing spec for api/v2 level_list
updates changelog
Merge pull request #1124 from opf/feature/remove_api_v1

Remove API v1
disable async jobs in test env by default
remove superfluous disabling of async jobs
manipulating asynchronicity with Delayed::Worker.delay_jobs should work by now