Allow deep-linking to tabs. Add breadcrumb to go back to source list

...Hopefully does not re-open #671

app/assets/javascripts/application.js

@@ -72,6 +72,16 @@ function reposition_tiles(container, tileClass){
 }
 
 document.addEventListener("turbolinks:load", function() {
+    // Show the tab associated with the window location hash (e.g. "#packages")
+    if (window.location.hash) {
+        var tab = $('ul.nav a[href="' + window.location.hash + '"]');
+        if (tab.length) {
+            // This terrible hack gets around the fact that event handlers in view templates get bound after the
+            // `tab.tab('show')` executes, so nothing happens.
+            setTimeout(function () { tab.tab("show"); }, 50);
+        }
+    }
+
     // Disabled tabs
     $(".nav-tabs li a[data-toggle='tooltip']").tooltip();
     $(".nav-tabs li.disabled a").click(function (e) { e.preventDefault(); return false });

app/controllers/sources_controller.rb

@@ -161,7 +161,7 @@ def set_breadcrumbs
     if @content_provider
       add_base_breadcrumbs('content_providers')
       add_show_breadcrumb(@content_provider)
-      add_breadcrumb 'Sources'
+      add_breadcrumb 'Sources', content_provider_path(@content_provider, anchor: 'sources')
 
       if params[:id]
         add_breadcrumb @source.title, content_provider_source_path(@content_provider, @source) if (@source && !@source.new_record?)