Add 'More' dropdown to GH Enterprise (#619)

extension/content.css

@@ -694,3 +694,8 @@ a.tabnav-extra[href$="mastering-markdown/"] {
 	font-size: 11px !important;
 	padding: 2px 3px 3px 3px !important;
 }
+
+/* Fix for GHE More Dropdown positioning */
+.reponav-dropdown.active .dropdown-menu {
+	left: auto !important;
+}

src/content.js

@@ -104,6 +104,21 @@ function renameInsightsDropdown() {
 	const dropdown = select('.reponav-item.reponav-dropdown');
 	if (dropdown) {
 		dropdown.firstChild.textContent = 'More ';
+	} else {
+		// GHE doesn't have the Insights dropdown currently, so create a dropdown
+		const moreDropdown = <div class="reponav-dropdown js-menu-container">
+			<button type="button" class="btn-link reponav-item reponav-dropdown js-menu-target " data-no-toggle="" aria-expanded="false" aria-haspopup="true">More <svg aria-hidden="true" class="octicon octicon-triangle-down v-align-middle text-y" height="11" version="1.1" viewBox="0 0 12 16" width="8"><path fill-rule="evenodd" d="M0 5l6 6 6-6z"></path></svg></button>
+			<div class="dropdown-menu-content js-menu-content">
+				<div class="dropdown-menu dropdown-menu-sw"></div>
+			</div>
+		</div>;
+
+		const settingsTab = select('[data-selected-links~="repo_settings"]');
+		if (settingsTab) {
+			settingsTab.parentNode.insertBefore(moreDropdown, settingsTab);
+		} else {
+			select('.reponav').appendChild(moreDropdown);
+		}
 	}
 }
 
@@ -559,10 +574,10 @@ async function onDomReady() {
 	if (pageDetect.isRepo()) {
 		gitHubInjection(window, () => {
 			hideEmptyMeta();
+			renameInsightsDropdown();
 			addReleasesTab();
 			removeProjectsTab();
 			addCompareLink();
-			renameInsightsDropdown();
 			addTitleToEmojis();
 			addReadmeButtons();