Start of "Bug 21991 - Move common query parameter (uc, rc) validation, token requiri...

Start of "Bug 21991 -  Move common query parameter (uc, rc) validation, token requiringness/checking to ApiBase/Similar"

Move token requringness check to the ApiMain

Adding an exception if we're using "gettoken" (block/unblock)

Remove array( 'missingparam', 'token' ), from the getPossibleErrors of modules that set requireToken method to true