Bug 37093: Searching for reports on Mana should use GET

Bug 37093: Searching for reports on Mana should use GET

Searching for reports on Mana currently fails by sending a POST to
svc/mana/search without a CSRF token. There's no reason to POST, it's
just sending a search string.

 1. Enable Mana: Reports - lower right is a blue Knowledgebase box with
    a link to Change your Mana KB settings
 2. Switch Use Mana KB to Yes, click Save, below that give it a name and
    email, Send to Mana KB
 3. Reports - Use saved - New report - New SQL from Mana
 4. Enter any keyword to search, get a 403 forbidden error
 5. Apply patch, restart_all, Shift+Reload the page to clear cache
 6. Enter any keyword likely to return results, like select, get results

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>