Hook invitation clear catch later than 'wp'

It was previously hooked before BP's canonical redirect, which meant that its
role as a cookie-catcher were being nullified by the double redirect
Die after redirects
Hook invitation clear catch later than 'wp'

It was previously hooked before BP's canonical redirect, which meant that its
role as a cookie-catcher were being nullified by the double redirect
Die after redirects
Readme
Concatenate error message rather than wiping it out

Props @SinCron

Fixes #112
readme
Fix paths to work better with unit tests
Unit test scaffold
Proper config string swapping for travis
Add $group_id and $user_id param sto invite_anyone_group_invite_access_test()

Also adds a few preliminary unit tests

See #113
In invite_anyone_group_invite_access_test(), use invite_anyone_options() to get options array

This ensures that we have valid default options even when no settings have yet
been saved to the database.

See #113
Unit tests for main invite_anyone_group_access_test() logic
invite_status should override global access settings

See #113
Enforce per-group invite access settings on Invite By Email pages

Props @dcavins

Fixes #113
Readme
Bump version numbers to 1.3
POT update for 1.3
Merge branch '1.2.x'
Define sources in CS integration

This makes it possible to use the newish LinkedIn and Facebook integrations.