Implement sub-tree sharing; read-only pages

src/app/components/editor/database/database.component.html

@@ -1,5 +1,5 @@
 <div class="database-wrapper">
-  <ion-toolbar>
+  <ion-toolbar *ngIf="!readonly">
     <ion-buttons>
       <ion-button (click)="onManageColumns()"><ion-icon name="build" color="primary"></ion-icon>&nbsp;Manage Columns</ion-button>
       <ion-button (click)="onInsertRow()"><ion-icon name="add-circle" color="success"></ion-icon>&nbsp;Insert Row</ion-button>
@@ -14,6 +14,7 @@
       class="ag-theme-balham"
       [rowData]="rowData"
       [columnDefs]="columnDefs"
+      suppressMovableColumns="true"
       (rowClicked)="onRowClicked($event)"
       (cellValueChanged)="onCellValueChanged()"
       #agGridElement