Merge pull request #563 from lfryc/KEYCLOAK-588

KEYCLOAK-588 retrieve window.location.origin in InternetExplorer-compatible way
Merge pull request #564 from stianst/master

Admin REST client
Merge pull request #565 from stianst/master

KEYCLOAK-581 Add login_hint query param to login
Updated admin endpoints and console to use oauth client name/clientId to retrieve a oauth client