Remove unnecesary code
tg-1783 #ready-for-test - Fix wiki links compatibility
Merge pull request #190 from taigaio/bug/1783/fix-internal-wiki-urls

Bug/1783/fix internal wiki urls
Adding user_active info to membership serializer
Merge pull request #191 from taigaio/bug/1743/historic-deleted-users-appears-in-listings

Adding user_active info to membership serializer
Try to fix tests
Merge pull request #198 from taigaio/fix-travis

Try to fix travis tests
Update README.md
Adding end points for getting projects by slug, tasks, userstories and issues by ref
Merge pull request #199 from taigaio/requests-reduction-refactor

Adding end points for getting projects by slug, tasks, userstories and issues by ref
Splitting tags if containing ,