command stuff; url-as-id; date column; column sorting

[yupi2]

Lot's of stuff changed/added:

• the wmcp command toggles the UI
• added ulx gplay "url" "title" (!gplay "url")
• added ulx gstop (!gstop)
• !stop in chat (although the wmcp_stop command is what all the cool kids choose) for stopping media on yourself
• ID column is now the Date column
• you can click on the columns to toggle ascending/descending sorting on them
• if ulx gplay is available then it is used for the Play for Everyone button (and the text is lightened if you don't have permission)
• maybe some other stuff
• WMCPMedialistRowRightClick hook parameter changes

TODO:

• Add some code for the server to convert (and backup previous wmcp.txt) to use URLs as the media-table ID
• meh? Change the column widths so we can have it all symmetrical
• Option to enable/disable the WMCP global-plays (and maybe global stops)
• Make the column headers use the disabled color (like it used before it was re-enabled)
• meh Decide if the wmcp_add, wmcp_settitle, and etc should be replaced with ULX versions

I didn't make any commits while testing so I basically had a lot of unrelated changes that weren't worth the time to split into multiple commits and now everything is just grouped together.

This isn't ready to be merged, but everything is error-free (AFAIK) so now just suggested changes + the TODO need to be finished

[yupi2]

5928a62 cleans up the callback stuff a bit along with adding ulx pplay and ulx pstop. The wmcp.GlobalPlay() and wmcp.GlobalStop() functions were changed and renamed so they can work on select players or everyone.

[yupi2]

I don't think I'll finish this.