#663 - added warning about required empty database

BudgetMasterServer/src/main/resources/languages/base_en.properties

@@ -637,6 +637,7 @@ import.entity.chart=Only user-defined charts will be imported.<br>The import of
 copied=Copied!
 
 migration.settings.description=All data from your existing BudgetMaster database will be migrated to the new database.<br> Please enter the settings for the new database backend (e.g. postgresql).
+migration.settings.description.warning=The database must be completely empty (no tables, no entries)!<br>Do not use a database that has been used with BudgetMaster 2.10.0 before!
 migration.settings.hostname=Hostname
 migration.settings.port=Port
 migration.settings.databaseName=Database name

BudgetMasterServer/src/main/resources/templates/migration.ftl

@@ -27,6 +27,17 @@
                             </div>
                         </div>
 
+                        <div class="row notification-row">
+                            <div class="col s12 center-align">
+                                <div class="notification-wrapper">
+                                    <div class="notification background-yellow text-black">
+                                        <i class="fas fa-exclamation-triangle notification-item"></i>
+                                        <span class="notification-item left-align">${locale.getString("migration.settings.description.warning")}</span>
+                                    </div>
+                                </div>
+                            </div>
+                        </div>
+
                         <div class="row">
                             <div class="input-field col s12 m12 l8 offset-l2">
                                 <i class="material-icons prefix">public</i>