Validate Signature for GitHub hook requests #4585

Review ID: 11793001
Merge pull request #93 from aroraumang/feature/task-4585

Validate Signature for GitHub hook requests #4585
Refactor tests #4583
Merge pull request #94 from priyankarani/feature/task-4583

Refactor tests #4583
Bug fix in registration using invitation code #4641

http://sentry.openlabs.co.in/default/my-openlabs-production/group/2862/
Merge pull request #96 from priyankarani/task-4641

Bug fix in registration using invitation code #4641
Seperate classes for both project and task #4579