Fix #590, #589.

Unified wording Calibre-Web
Replaced one table on admin page, deleted password column
Removed spaces on layout page
Removed uesless commit calls during db migration
Implementation of registering by email

cps/templates/tasks.html

@@ -28,6 +28,7 @@
 {% block js %}
 <script src="{{ url_for('static', filename='js/libs/bootstrap-table/bootstrap-table.min.js') }}"></script>
         <script>
+            // ToDo: Move to js file
             $('#table').bootstrapTable({
                formatNoMatches: function () {
                 return '';