Basic label support (showing labels in the entries list; creating labels via a modal).

services/web/app/views/project/editor/history/entriesListV2.pug

@@ -129,6 +129,12 @@ script(type="text/ng-template", id="historyEntryTpl")
 		time.history-entry-day(ng-if="::$ctrl.entry.meta.first_in_day") {{ ::$ctrl.entry.meta.end_ts | relativeDate }}
 
 		.history-entry-details(ng-click="$ctrl.onSelect({ selectedEntry: $ctrl.entry })")
+			.history-entry-label(
+				ng-if="$ctrl.entry.labels.length > 0"
+				ng-repeat="label in ::$ctrl.entry.labels"
+			)
+				i.fa.fa-tag
+				|  {{ label.comment }}
 			ol.history-entry-changes
 				li.history-entry-change(
 					ng-repeat="pathname in ::$ctrl.entry.pathnames"

services/web/app/views/project/editor/history/toolbarV2.pug

@@ -1,4 +1,5 @@
 .history-toolbar(
+	ng-controller="HistoryV2ToolbarController"
 	ng-if="ui.view == 'history' && history.isV2 && history.viewMode === HistoryViewModes.POINT_IN_TIME"
 )
 	span(ng-show="history.loadingFileTree")
@@ -6,8 +7,46 @@
 		|    #{translate("loading")}...
 	span(ng-show="!history.loadingFileTree") #{translate("browsing_project_as_of")} 
 		time.history-toolbar-time {{ history.selection.updates[0].meta.end_ts | formatDate:'Do MMM YYYY, h:mm a' }}
-	.history-toolbar-btn(
-		ng-click="toggleHistoryViewMode();"
+	button.history-toolbar-btn(
+		ng-click="showAddLabelDialog();"
+		ng-disabled="history.loadingFileTree"
 	) 
-		i.fa
-		| #{translate("compare_to_another_version")}
+		i.fa.fa-tag
+		|  Label this version
+	button.history-toolbar-btn(
+		ng-click="toggleHistoryViewMode();"
+		ng-disabled="history.loadingFileTree"
+	) 
+		i.fa.fa-exchange
+		|  #{translate("compare_to_another_version")}
+
+script(type="text/ng-template", id="historyV2AddLabelModalTemplate")
+	form(
+		name="addLabelModalForm"
+		ng-submit="addLabelModalFormSubmit();"
+		novalidate
+	)
+		.modal-header
+			h3 Label this version
+		.modal-body
+			.alert.alert-danger(ng-show="state.error.message") {{ state.error.message}} 
+			.alert.alert-danger(ng-show="state.error && !state.error.message") #{translate("generic_something_went_wrong")}
+			.form-group
+				input.form-control(
+					type="text"
+					placeholder="New label name"
+					ng-model="inputs.labelName"
+					focus-on="open"
+					required
+				)
+		.modal-footer
+			button.btn.btn-default(
+				type="button"
+				ng-disabled="state.inflight"
+				ng-click="$dismiss()"
+			) #{translate("cancel")}
+			input.btn.btn-primary(
+				ng-disabled="addLabelModalForm.$invalid || state.inflight"
+				ng-value="state.inflight ? 'Adding label' : 'Add label'"
+				type="submit"
+			)