better description what to do with the ics file

launch.html

@@ -555,7 +555,7 @@
           </div>
           
           <div id="icsSuccess" class="success-message hidden">
-            <span data-i18n="creator.successMessage">Meeting created! Download your calendar file.</span>
+            <span data-i18n="creator.successMessage">Meeting created! Download your calendar file and open it to import the meeting into your personal calendar.</span>
             <a id="downloadIcsLink" class="button primary" style="margin-top: 12px; display: inline-block;" data-i18n="creator.downloadButton">Download ICS File</a>
           </div>
         </div>
@@ -682,7 +682,7 @@
             meetingOrganizerLabel: "Organizer Email",
             createButton: "Create Meeting",
             cancelButton: "Cancel",
-            successMessage: "Meeting created! Download your calendar file.",
+            successMessage: "Meeting created! Download your calendar file and open it to import the meeting into your personal calendar.",
             downloadButton: "Download ICS File",
             createNewButton: "Create New Meeting",
             meetingNameRequired: "Please enter a meeting name",
@@ -772,7 +772,7 @@
             meetingOrganizerLabel: "Organisator E-Mail",
             createButton: "Meeting erstellen",
             cancelButton: "Abbrechen",
-            successMessage: "Meeting erstellt! Laden Sie Ihre Kalenderdatei herunter.",
+            successMessage: "Meeting erstellt! Laden Sie Ihre Kalenderdatei herunter und öffnen Sie diese, um das Meeting in Ihren persönlichen Kalender zu importieren.",
             downloadButton: "ICS-Datei herunterladen",
             createNewButton: "Neues Meeting erstellen",
             meetingNameRequired: "Bitte geben Sie einen Meeting-Namen ein",
@@ -861,7 +861,7 @@
             meetingOrganizerLabel: "Email de l'organisateur",
             createButton: "Créer la réunion",
             cancelButton: "Annuler",
-            successMessage: "Réunion créée ! Téléchargez votre fichier calendrier.",
+            successMessage: "Réunion créée ! Téléchargez votre fichier calendrier et ouvrez-le pour importer la réunion dans votre calendrier personnel.",
             downloadButton: "Télécharger le fichier ICS",
             createNewButton: "Créer une nouvelle réunion",
             meetingNameRequired: "Veuillez entrer un nom de réunion",
@@ -944,7 +944,7 @@
             meetingOrganizerLabel: "组织者邮箱",
             createButton: "创建会议",
             cancelButton: "取消",
-            successMessage: "会议已创建！请下载您的日历文件。",
+            successMessage: "会议已创建！请下载您的日历文件并打开它，将会议导入您的个人日历。",
             downloadButton: "下载 ICS 文件",
             createNewButton: "创建新会议",
             meetingNameRequired: "请输入会议名称",