Pass the full project path for resolve buttons

This fixes an issue that would stop the resolve buttons working when GitLab is installed with a relative URL

Closes #21704

app/assets/javascripts/diff_notes/components/resolve_btn.js.es6

 ((w) => {
   w.ResolveBtn = Vue.extend({
-    mixins: [
-      ButtonMixins
-    ],
     props: {
       noteId: Number,
       discussionId: String,
       resolved: Boolean,
-      namespacePath: String,
       projectPath: String,
       canResolve: Boolean,
       resolvedBy: String
@@ -69,10 +65,10 @@
         if (this.isResolved) {
           promise = ResolveService
-            .unresolve(this.namespace, this.noteId);
+            .unresolve(this.projectPath, this.noteId);
         } else {
           promise = ResolveService
-            .resolve(this.namespace, this.noteId);
+            .resolve(this.projectPath, this.noteId);
         }
         promise.then((response) => {

app/assets/javascripts/diff_notes/components/resolve_discussion_btn.js.es6

 ((w) => {
   w.ResolveDiscussionBtn = Vue.extend({
-    mixins: [
-      ButtonMixins
-    ],
     props: {
       discussionId: String,
       mergeRequestId: Number,
-      namespacePath: String,
       projectPath: String,
       canResolve: Boolean,
     },
@@ -50,7 +46,7 @@
     },
     methods: {
       resolve: function () {
-        ResolveService.toggleResolveForDiscussion(this.namespace, this.mergeRequestId, this.discussionId);
+        ResolveService.toggleResolveForDiscussion(this.projectPath, this.mergeRequestId, this.discussionId);
       }
     },
     created: function () {

app/assets/javascripts/diff_notes/mixins/namespace.js.es6

-((w) => {
-  w.ButtonMixins = {
-    computed: {
-      namespace: function () {
-        return `${this.namespacePath}/${this.projectPath}`;
-      }
-    }
-  };
-})(window);

app/assets/javascripts/diff_notes/services/resolve.js.es6

@@ -9,32 +9,32 @@
       Vue.http.headers.common['X-CSRF-Token'] = $.rails.csrfToken();
     }
-    prepareRequest(namespace) {
+    prepareRequest(root) {
       this.setCSRF();
-      Vue.http.options.root = `/${namespace}`;
+      Vue.http.options.root = root;
     }
-    resolve(namespace, noteId) {
-      this.prepareRequest(namespace);
+    resolve(projectPath, noteId) {
+      this.prepareRequest(projectPath);
       return this.noteResource.save({ noteId }, {});
     }
-    unresolve(namespace, noteId) {
-      this.prepareRequest(namespace);
+    unresolve(projectPath, noteId) {
+      this.prepareRequest(projectPath);
       return this.noteResource.delete({ noteId }, {});
     }
-    toggleResolveForDiscussion(namespace, mergeRequestId, discussionId) {
+    toggleResolveForDiscussion(projectPath, mergeRequestId, discussionId) {
       const discussion = CommentsStore.state[discussionId],
             isResolved = discussion.isResolved();
       let promise;
       if (isResolved) {
-        promise = this.unResolveAll(namespace, mergeRequestId, discussionId);
+        promise = this.unResolveAll(projectPath, mergeRequestId, discussionId);
       } else {
-        promise = this.resolveAll(namespace, mergeRequestId, discussionId);
+        promise = this.resolveAll(projectPath, mergeRequestId, discussionId);
       }
       promise.then((response) => {
@@ -57,10 +57,10 @@
       })
     }
-    resolveAll(namespace, mergeRequestId, discussionId) {
+    resolveAll(projectPath, mergeRequestId, discussionId) {
       const discussion = CommentsStore.state[discussionId];
-      this.prepareRequest(namespace);
+      this.prepareRequest(projectPath);
       discussion.loading = true;
@@ -70,10 +70,10 @@
       }, {});
     }
-    unResolveAll(namespace, mergeRequestId, discussionId) {
+    unResolveAll(projectPath, mergeRequestId, discussionId) {
       const discussion = CommentsStore.state[discussionId];
-      this.prepareRequest(namespace);
+      this.prepareRequest(projectPath);
       discussion.loading = true;

app/views/discussions/_resolve_all.html.haml

 - if discussion.for_merge_request?
-  %resolve-discussion-btn{ ":namespace-path" => "'#{discussion.project.namespace.path}'",
-      ":project-path" => "'#{discussion.project.path}'",
+  %resolve-discussion-btn{ ":project-path" => "'#{project_path(discussion.project)}'",
       ":discussion-id" => "'#{discussion.id}'",
       ":merge-request-id" => discussion.noteable.iid,
       ":can-resolve" => discussion.can_resolve?(current_user),

app/views/projects/notes/_note.html.haml

@@ -24,8 +24,7 @@
               %span.note-role.hidden-xs= access
             - if note.resolvable?
-              %resolve-btn{ ":namespace-path" => "'#{note.project.namespace.path}'",
-                  ":project-path" => "'#{note.project.path}'",
+              %resolve-btn{ ":project-path" => "'#{project_path(note.project)}'",
                   ":discussion-id" => "'#{note.discussion_id}'",
                   ":note-id" => note.id,
                   ":resolved" => note.resolved?,