Refs #5029: Allow initial organization and location to be specified during seed.

Initial seed data can now be specified by running:

rake db:seed SEED_INITIAL_ORGANIZATION=MyOrg SEED_INITIAL_LOCATION=MyLoc

This also has the side effect of allowing creation of multiple org/location
by running seed with different values for each.
fixes #6336, #6255 - Fixes issue with not being able to use same name for an activation key across multiple orgs, BZ 1105024, BZ 1109907, BZ 1105024
Merge pull request #4336 from ehelms/refs-5029

Refs #5029: Allow initial organizationd and location to be specified dur...
fixes #6389 - removing available content for content hosts rabl

as this was causing very very long load times for the content hosts page
Also removing from akey show.rabl, as its not needed and would slow down there
too
Merge pull request #4328 from cfouant/fixes-6336

fixes #6336 - Fixes issue with not being able to use same name for an activation key across multiple orgs, BZ 1105024
Merge pull request #4349 from jlsherrill/chosts

fixes #6389 - removing available content for content hosts rabl