feat(dashboard): add provider's tabs

- slit provider between tabs
- remove providerID from backend/frontend title
- add Angular-Boostrap

static/app/sections/providers/backend-monitor/backend-monitor.directive.js

@@ -12,8 +12,7 @@
         bindToController: true,
         scope: {
           backend: '=',
-          backendId: '=',
-          providerId: '='
+          backendId: '='
         }
       };
     });

static/app/sections/providers/backend-monitor/backend-monitor.html

@@ -1,6 +1,6 @@
 <div class="panel panel-success">
   <div class="panel-heading">
-    <strong><span class="glyphicon glyphicon-tasks" aria-hidden="true"></span> {{backendCtrl.backendId}}</strong> [{{backendCtrl.providerId}}]
+    <strong><span class="glyphicon glyphicon-tasks" aria-hidden="true"></span> {{backendCtrl.backendId}}</strong>
   </div>
   <div class="panel-body">
     <table class="panel-table__servers table table-striped table-hover">