Nordugrid gahp shouldn't assert on bad user input. #3495

Don't assert if parsing the job RSL fails. Instead, return failure for
the submit command. Asserting is especially bad because input from the
user (via nordugrid_rsl attribute) can cause it to happen.
Finish docs for ec2 ssh keypair job attributes.
directories to ignore updated, and year changed 2012->2013
Merge branch 'V7_8-branch'