Add module custom style property

jet/modules.py

@@ -30,6 +30,7 @@ class DashboardModule(object):
     order = None
     ajax_load = False
     contrast = False
+    style = False
 
     class Media:
         css = ()

jet/templates/jet/dashboard/module.html

@@ -25,7 +25,7 @@
         </span>
     </div>
 
-    <div class="dashboard-item-content{% if module.contrast %} contrast{% endif %}">
+    <div class="dashboard-item-content{% if module.contrast %} contrast{% endif %}"{% if module.style %} style="{{ module.style }}"{% endif %}>
         {% if module.ajax_load %}
             <div class="loading-indicator-wrapper">
                 <span class="icon-refresh loading-indicator"></span>