Update 5

- Made use_exp_restrictions_heads_hours text2num'ed in configuration.dm,
rather than on use
- Converted all exp_types to #defines, instead of magic strings
- Moved exp_jobsmap to jobs.dm
- Replaced has_exp_for_job with job.available_in_playtime, which returns
- Changed <BR> -s to <LI>s, for proper HTML lists
- Made update_exp less indented, easier to read
- Fixed potential runtime in admin/topic.dm when calling exp window on a
non-existent mob
- Made job preferences screen tell you how long until you unlock each
locked job, in hours or minutes as appliccable
- Changed SQL storage format because mediumtext does not support default
''
- Converted exptimer() into a roundstart hook proc

Missed body tag

Typo fix

code/modules/admin/topic.dm

@@ -2018,8 +2018,9 @@
 
 	else if(href_list["getplaytimewindow"])
 		if(!check_rights(R_ADMIN))	return
-
 		var/mob/M = locate(href_list["getplaytimewindow"])
+		if(!M)
+			return
 		usr.client.cmd_show_exp_panel(M.client)
 
 	else if(href_list["jumpto"])