mod_incidents_handling: initial commit, only about half tested, util functions (parsers, etc) should be working and so do adhoc commands. All the fixed-type fields into the adhoc cmds' output are currently stripped by Prosody until someone *fills* line 56 of util.dataforms.

2c07bcf56a36d6e74dc0f5422e89bd61f4d31239 0.8-diverge