Designing an authorization flow & gem to use

[sriram2520]

Sample Use Cases

1. Add email server to workspace
2. Invite members to workspace
3. Create teams in workspace
4. Add members to teams
5. Add email server to team
6. Read only access to emails
7. Send emails
8. Remove for all the above

Candidate Options

1. CanCanCan
2. ActionPolicy
3. Pundit

[sriram2520]

Duplicate of #88