Fix missing string in modals.pug

Add escape to execute translate() server-side when handling error message for invalid filenames in project on copy.

Signed-off-by: Simon Detheridge <s@sd.ai>

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

@@ -127,7 +127,7 @@ script(type='text/ng-template', id='cloneProjectModalTemplate')
 		) ×
 		h3 #{translate("copy_project")}
 	.modal-body
-		.alert.alert-danger(ng-show="state.error.message") {{state.error.message === "invalid element name" ? translate("invalid_element_name") : state.error.message}}
+		.alert.alert-danger(ng-show="state.error.message") {{state.error.message === "invalid element name" ? "#{translate("invalid_element_name")}" : state.error.message}}
 		.alert.alert-danger(ng-show="state.error && !state.error.message") #{translate("generic_something_went_wrong")}
 		form(name="cloneProjectForm", novalidate)
 			.form-group
@@ -271,7 +271,7 @@ script(type="text/ng-template", id="showErrorModalTemplate")
 		) ×
 		h3 #{translate("generic_something_went_wrong")}
 	.modal-body
-		.alert.alert-danger(ng-show="error.message") {{error.message === "invalid element name" ? translate("invalid_element_name") : error.message}}
+		.alert.alert-danger(ng-show="error.message") {{error.message === "invalid element name" ? "#{translate("invalid_element_name")}" : error.message}}
 		.alert.alert-danger(ng-show="error && !error.message") #{translate("generic_something_went_wrong")}
 	.modal-footer
 		button.btn.btn-default(ng-click="cancel()") #{translate("cancel")}