Support tags in emails to automatically perform/map actions

Similar to how Zendesk supports auto assignment tags, support within ML Work Orders emails.

Some examples we'd like to see:

1. #Assign [username] (ie., #assign edavidson)

   1. Replying (with permissions) to an email with this would assign the ticket to the user with this username

2. #RequestType [listrequesttype] (ie., #requesttype technology)

   1. Replying (with permissions) to an email with this would change the request type to technology

3. #close #onhold #complete #inprogress #cancel

   1. Replying (with permissions) to an email with these tags would change the status

4. #Priority [listpriorityname or id#] (ie., #priority high or #priority low)

   1. Would change the priority to low (or medium/high/urgent)

5. #Problemtype [listproblemtypename or id#] (ie., #problemtype email or #problemtype 6)

   1. Would assign the problem type

6. #Building [listbuildingname or id#] (ie., #building bowen or #building 3)

   1. Would assign the building

7. #Space [listspacename or id#] (ie., #space A100 or #space 4)

   1. Would assign the space (and change the building if necessary)

8. #internalnote

   1. Would allow the reply to be posted as an internal note

These all should be able to be put in any combination in an email:

For example:

Hi Eric,

This ticket is actually going to get fixed first by #RequestType maintenance. I'll mark it as #priority high so they get to it quickly.

Mike