Removing identity.provider.mgt since now it is under components

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@180545 a5903396-d722-0410-b921-86c7d4935375
Removing identity.provider.mgt.ui since now it is under components

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@180546 a5903396-d722-0410-b921-86c7d4935375
Callback URL is recommneded according to spec

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@180549 a5903396-d722-0410-b921-86c7d4935375