Run database migrations when opening board. Not when updating WeKan.

Thanks to xet7 !

client/components/boardConversionProgress.jade

@@ -0,0 +1,27 @@
+template(name="boardConversionProgress")
+  .board-conversion-overlay(class="{{#if isConverting}}active{{/if}}")
+    .board-conversion-modal
+      .board-conversion-header
+        h3
+          i.fa.fa-cogs
+          | {{_ 'converting-board'}}
+        p {{_ 'converting-board-description'}}
+      
+      .board-conversion-content
+        .conversion-progress
+          .progress-bar
+            .progress-fill(style="width: {{conversionProgress}}%")
+          .progress-text {{conversionProgress}}%
+        
+        .conversion-status
+          i.fa.fa-spinner.fa-spin
+          | {{conversionStatus}}
+        
+        .conversion-time(style="{{#unless conversionEstimatedTime}}display: none;{{/unless}}")
+          i.fa.fa-clock-o
+          | {{_ 'estimated-time-remaining'}}: {{conversionEstimatedTime}}
+      
+      .board-conversion-footer
+        .conversion-info
+          i.fa.fa-info-circle
+          | {{_ 'conversion-info-text'}}