remove check payment
Add csrf to participant-add and remove url param for security
Merge remote-tracking branch 'remotes/stfalcon/master'

* remotes/stfalcon/master:
  deploy to new server
  fix session stor path
Add check payment
Add sessions directory in file .gitignore
Merge pull request #217 from bolotyuh/master

Add csrf to participant-add and remove url param for security