Use seeding to populate organizations, roles and tags

[pbanaszkiewicz]

Use seeding to add organizations, roles and tags.

Roles:

• Helper
• Instructor
• Workshop host
• Learner
• Workshop organizer
• Contributor

Tags:

• automated-email
• DC
• LC
• SWC
• Circuits
• online
• TTT
• ITT
• Pilot
• for-profit
• scholarship
• private-event
• cancelled
• unresponsive
• stalled
• LMO
• LSO
• hackaton
• WiSE

Organizations:

• self-organized (self-organized)
• Software Carpentry (software-carpentry.org)
• Data Carpentry (datacarpentry.org)
• Library Carpentry (librarycarpentry.org)
• Instructor Training (carpentries.org)

Once seeded, remove creating those from fake_database.py.

[pbanaszkiewicz]

@maneesha I listed all roles, tags and organizations created by the fake database script. Some roles or tags may not be necessary, please let me know which I should remove.