Add kick,ban,make admin and make moderator operations

src/components/messages/ContactKicked.vue

@@ -0,0 +1,25 @@
+<template>
+  <!-- Contact left the chat -->
+  <div class="messageJoin">
+    {{ (event.getStateKey() == this.$matrix.currentUserId) ?
+    $t('message.user_was_kicked_you')
+    :
+    event.getSender() == this.$matrix.currentUserId ?
+    $t('message.user_was_kicked_by_you',{user: eventStateKeyDisplayName(event)})
+    :
+    $t('message.user_was_kicked',{user: eventStateKeyDisplayName(event)})
+    }}
+  </div>
+</template>
+
+<script>
+import messageMixin from "./messageMixin";
+
+export default {
+  mixins: [messageMixin],
+};
+</script>
+
+<style lang="scss">
+@import "@/assets/css/chat.scss";
+</style>