TGUI v3.0

This ports TGUI, and makes the old nano crew monitor and the disposal
bins use it as first examples.

code/_helpers/logging.dm

@@ -155,6 +155,9 @@
 /proc/log_unit_test(text)
 	to_world_log("## UNIT_TEST: [text]")
 
+/proc/log_tgui(text)
+	diary << "\[[time_stamp()]]TGUI: [text][log_end]"
+
 /proc/report_progress(var/progress_message)
 	admin_notice("<span class='boldannounce'>[progress_message]</span>", R_DEBUG)
 	to_world_log(progress_message)