Lets mentors see playtime

Mentors can already see a list of all players by account age. This
includes antags with obvious names, like "Donk Co. Operative #1".

This PR changes the permissions on the playtime report (the one which
shows how much playtime everyone has) so mentors can see that, too.

The idea being that this enables mentors to distinguish between "X has
an old account" and "X has a lot of experience on paradise". Currently,
mentors cannot distinguish the two.

Also, consistency. If mentors can see players' account registration age,
they should also be able to see players' playtime experience.

code/modules/admin/admin_verbs.dm

@@ -2,7 +2,8 @@
 var/list/admin_verbs_default = list(
 	/client/proc/deadmin_self,			/*destroys our own admin datum so we can play as a regular player*/
 	/client/proc/hide_verbs,			/*hides all our adminverbs*/
-	/client/proc/cmd_mentor_check_new_players
+	/client/proc/cmd_mentor_check_new_players,
+	/client/proc/cmd_mentor_check_player_exp /* shows players by playtime */
 	)
 var/list/admin_verbs_admin = list(
 	/client/proc/check_antagonists,		/*shows all antags*/
@@ -75,7 +76,6 @@ var/list/admin_verbs_admin = list(
 	/client/proc/debug_variables,
 	/client/proc/show_snpc_verbs,
 	/client/proc/reset_all_tcs,			/*resets all telecomms scripts*/
-	/client/proc/cmd_admin_check_player_exp, /* shows players by playtime */
 	/client/proc/toggle_mentor_chat
 )
 var/list/admin_verbs_ban = list(
@@ -166,7 +166,7 @@ var/list/admin_verbs_debug = list(
 	/client/proc/admin_serialize,
 	/client/proc/admin_deserialize,
 	/client/proc/jump_to_ruin,
-	/client/proc/toggle_medal_disable	
+	/client/proc/toggle_medal_disable
 	)
 var/list/admin_verbs_possess = list(
 	/proc/possess,