Blocking by username
Merge branch 'BRANCH_PLATFORM_5' of github.com:idega/com.idega.core into BRANCH_PLATFORM_5

* 'BRANCH_PLATFORM_5' of github.com:idega/com.idega.core:
  Trying to load user's login by user name if failed to find by user
  Checking if group is not null; checking if need to verify if page is published
  Checking if key and value are not nulls
  Can not escape everything
  Checking if need to cache

Conflicts:
	src/java/com/idega/core/accesscontrol/business/LoginBusinessBean.java