Syndicate Borg emergency fixes

-Syndicate Borgs will no longer synch to AI
-Syndicate Borgs can no longer emag themselves
-Syndicate Borgs will get the proper faction assigned to them,
preventing viscerators from tearing them apart.
Stops get_candidates from runtiming when it comes across and observer without a client
Merge pull request #2334 from VistaPOWA/syndieborg_emergency_fixes

Syndicate Borg emergency fixes (please merge and push to server quick before some shitler fucks over the entire op team just because lellaws)