Two flags on invitation code

[Jimmy Chu]

Please add two flags on this feature

• invitation_required: users are required to register with invitation
• invitation_shown: in registration screen, invitation code text box is shown

Possible values of (invitation_required, invitation_shown):

• (true, true)
• (false, true)
• (false, false) - this is the original behavior before you implement this feature

(true, false) - doesn't make sense. Make this behave the same as (true, true)

[LiAh Sheep]

If (false, true), do we check the validity of invitation code?

[LiAh Sheep]

Assumed the answer is yes, so whatever the user submitted is checked.

[Jimmy Chu]

feature: Two flags on invitation code (fixing #182)

→ <<cset 8120eb6e91f9>>

[Jimmy Chu]

Merged in liahsheep/cnpaas-portal/invitation-flags (pull request #192)

feature: Two flags on invitation code (fixing #182)

→ <<cset 51cd8a324433>>