changed catch block in join listener for Exception, so the listener dont interrupt one another

fixed join template
added join listener to check if a joined user should be muted
changed cached message to be an intant instead
fixed wrong id in mute table
moved the timestamps for mute notifications to the footer
fixed a case for message embeds, when the embed does not have a description

abstracto-application/abstracto-modules/moderation/moderation-impl/src/main/resources/templates/mute/mute_log_embed_en_US.ftl

@@ -28,10 +28,6 @@
         "name": "Reason",
         "value": "${mute.reason}"
     },
-    {
-        "name": "Muted from",
-        "value": "${formatInstant(mute.muteDate, "yyyy-MM-dd HH:mm:ss")}"
-    },
     {
         "name": "Muted for",
         "value": "${fmtDuration(muteDuration)}"
@@ -43,5 +39,6 @@
   ],
   "footer": {
     "text": "Mute #${mute.id}"
-  }
+  },
+  "timeStamp": "${mute.muteDate}"
 }

abstracto-application/abstracto-modules/moderation/moderation-impl/src/main/resources/templates/mute/unmute_log_embed_en_US.ftl

@@ -39,5 +39,6 @@
   ],
   "footer": {
     "text": "Mute #${mute.id}"
-  }
+  },
+  "timeStamp": "${mute.muteTargetDate}"
 }