Make each overnight script optional

trying to phase out at least 1, maybe 2 of them...

this also cleans up the 'restart' script to use 'rattail overnight'
per recent changes.  this seems the most useful to have around, in
case of web app failure

rattail_fabric2/deploy/luigi/cron-overnight.sh.mako

@@ -1,10 +1,4 @@
 #!/bin/sh -e
-<%text>############################################################</%text>
-#
-# overnight automation (${automation}) via cron
-#
-<%text>############################################################</%text>
-
 
 cd ${envroot}
 
@@ -12,7 +6,8 @@ RATTAIL="bin/rattail --config=app/cron.conf"
 
 $RATTAIL overnight ${automation.lower()} <%text>\</%text>
         --no-versioning <%text>\</%text>
-         % if email_key is not Undefined and email_key:
-         --email-key '${email_key}' <%text>\</%text>
-         % endif
-        --no-email-if-empty
+        % if email_key is not Undefined and email_key:
+        --email-key '${email_key}' <%text>\</%text>
+        % endif
+        --no-email-if-empty <%text>\</%text>
+        --wait

rattail_fabric2/deploy/luigi/restart-overnight.sh.mako

@@ -1,5 +1,13 @@
 #!/bin/sh -e
 
-DATE=`date --date='yesterday' +%Y-%m-%d`
+cd ${envroot}
 
-echo "${envroot}/bin/rattail -c ${appdir}/cron.conf --no-versioning run-n-mail ${"--key '{}'".format(email_key) if email_key is not Undefined and email_key else ''} -S 'Overnight catch-up: ${automation}' '${appdir}/overnight-${automation.lower()}.sh $DATE'" | at 'now + 1 minute'
+RATTAIL="bin/rattail --config=app/cron.conf"
+
+$RATTAIL overnight ${automation.lower()} <%text>\</%text>
+        --no-versioning <%text>\</%text>
+        % if email_key is not Undefined and email_key:
+        --email-key '${email_key}' <%text>\</%text>
+        % endif
+        --email-if-empty <%text>\</%text>
+        --no-wait