Use translations for action in project delete modal

services/web/app/views/project/list/modals.jade

@@ -183,7 +183,9 @@ script(type='text/ng-template', id='deleteProjectsModalTemplate')
 			data-dismiss="modal"
 			ng-click="cancel()"
 		) ×
-		h3 {{action}} #{translate("projects")}
+		h3(ng-if="action == 'delete'") #{translate("delete_projects")}
+		h3(ng-if="action == 'leave'") #{translate("leave_projects")}
+		h3(ng-if="action == 'delete-and-leave'") #{translate("delete_and_leave_projects")}
 	.modal-body
 		div(ng-show="projectsToDelete.length > 0")
 			p #{translate("about_to_delete_projects")}

services/web/public/coffee/main/project-list/modal-controllers.coffee

@@ -65,11 +65,11 @@ define [
 		$scope.projectsToLeave = projects.filter (project) -> project.accessLevel != "owner"
 
 		if $scope.projectsToLeave.length > 0 and $scope.projectsToDelete.length > 0
-			$scope.action = "Delete & Leave"
+			$scope.action = "delete-and-leave"
 		else if $scope.projectsToLeave.length == 0 and $scope.projectsToDelete.length > 0
-			$scope.action = "Delete"
+			$scope.action = "delete"
 		else
-			$scope.action = "Leave"
+			$scope.action = "leave"
 
 		$scope.delete = () ->
 			$modalInstance.close()