Fix placeholder for empty epics dashboard

app/locales/taiga/locale-en.json

@@ -414,8 +414,8 @@
             "UNASSIGNED": "Unassigned"
         },
         "EMPTY": {
-            "TITLE": "It looks like you have not created any epics yet",
+            "TITLE": "It looks like there aren't any epics yet",
-            "EXPLANATION": "Create an epic to have a superior level of User Stories. Epics can contain or be composed by User Stories from this or any other project",
+            "EXPLANATION": "Epics are items at a higher level that encompass user stories.<br />Epics are at the top of the hierarchy and can be used to group user stories together.",
             "HELP": "Learn more about epics"
         },
         "TABLE": {

app/modules/epics/dashboard/epics-dashboard.jade

@@ -27,7 +27,7 @@
             p(translate="EPICS.EMPTY.EXPLANATION")
             a(
                 translate="EPICS.EMPTY.HELP"
-                href="#TODO: Link to Epics section in taiga-support"
+                href="https://tree.taiga.io/support/epics/what-is-an-epic/"
                 target="_blank"
                 ng-title="EPICS.EMPTY.HELP | translate"
             )