New Ticket UI Changes + Some Post Reply UI Changes

New Ticket UI:
- Clean up recipient section (adding user and collaborators)
- Give agents the option of who to send the new ticket alert to:
	- Alert to All
	- Alert to User
	- Alert to CC + User
	- Alert to BCC
	- Do not send an Alert
- Added option of adding new Users for cc/bcc section using the 'Add New' button

Post Reply UI:
- Instead of having to type to get the option of adding a new user in the cc/bcc boxes, put an Add New button
- Clean up Add New routine
	- Now when adding a new collaborator using the Add New button, the User's name will appear in the cc or bcc box as specified and the Agent can go ahead and write their reply rather than pulling up the manage collaborators popup and forcing the agent to have to save the collaborator changes before being able to type a reply
- Change the option "Reply to Collaborators" to "Reply to CC + User" to avoid confusion