Fix bug - check ownership of job post before editing

[manusajith]

[manusajith]

cc/ @nate-strauser

[nate-strauser]

i'd prefer to display an error message instead of just a redirect

could be done in the template, checking the userid and either showing the form or a error message - also could just add a 'forbidden' template and redirect to that from the router

[edionmelarosa]

Can't duplicate this issue.