will redirect users if they come from community site using /?action=showlogin
move referer from callbackURL to state

- Revert back callbackURL
- set referer to 'state'
Merge branch 'dev' into quesks-I-107026-incorrect-contest-type-tooltip-color
typo fix: change "challenget" to "challenge"
Merge pull request #243 from bbodenmiller/patch-1

typo fix: change "challenget" to "challenge"
Add angularJS doc to readme
Fix Link format in readme
Update angularjs documentation
Add ui-router library
changed api server url to a plugin option
Merge pull request #248 from topcoderinc/james-s-209326-qa

changed api server url to a plugin option
replaced wp_get_referer() to $_SERVER['HTTP_REFERER']

wp_get_referer() didn't captured referer from outside e.g:
community.topcoder.com
removed "echo" which was used to debug
Merge pull request #251 from topcoderinc/I-114441-custom-callback-login

I 114441 custom callback login
Merge branch 'dev' into quesks-I-107026-incorrect-contest-type-tooltip-color
fix hardcoded list of design type challenges
Merge branch 'quesks-I-107026-incorrect-contest-type-tooltip-color' into quesks