Rename PropertyHolder to LayoutHolder

editor/src/messages/dialog/simple_dialogs/about_graphite_dialog.rs

@@ -7,8 +7,8 @@ pub struct AboutGraphiteDialog {
 	pub localized_commit_date: String,
 }
 
-impl PropertyHolder for AboutGraphiteDialog {
-	fn properties(&self) -> Layout {
+impl LayoutHolder for AboutGraphiteDialog {
+	fn layout(&self) -> Layout {
 		let links = [
 			("Website", "https://graphite.rs"),
 			("Credits", "https://github.com/GraphiteEditor/Graphite/graphs/contributors"),

editor/src/messages/dialog/simple_dialogs/close_all_documents_dialog.rs

@@ -4,8 +4,8 @@ use crate::messages::prelude::*;
 /// A dialog for confirming the closing of all documents viewable via `file -> close all` in the menu bar.
 pub struct CloseAllDocumentsDialog;
 
-impl PropertyHolder for CloseAllDocumentsDialog {
-	fn properties(&self) -> Layout {
+impl LayoutHolder for CloseAllDocumentsDialog {
+	fn layout(&self) -> Layout {
 		let discard = TextButton::new("Discard All")
 			.min_width(96)
 			.on_update(|_| {

editor/src/messages/dialog/simple_dialogs/close_document_dialog.rs

@@ -8,8 +8,8 @@ pub struct CloseDocumentDialog {
 	pub document_id: u64,
 }
 
-impl PropertyHolder for CloseDocumentDialog {
-	fn properties(&self) -> Layout {
+impl LayoutHolder for CloseDocumentDialog {
+	fn layout(&self) -> Layout {
 		let document_id = self.document_id;
 
 		let button_widgets = vec![

editor/src/messages/dialog/simple_dialogs/coming_soon_dialog.rs

@@ -8,8 +8,8 @@ pub struct ComingSoonDialog {
 	pub issue: Option<i32>,
 }
 
-impl PropertyHolder for ComingSoonDialog {
-	fn properties(&self) -> Layout {
+impl LayoutHolder for ComingSoonDialog {
+	fn layout(&self) -> Layout {
 		let mut details = "This feature is not implemented yet".to_string();
 
 		let mut buttons = vec![TextButton::new("OK")

editor/src/messages/dialog/simple_dialogs/error_dialog.rs

@@ -7,8 +7,8 @@ pub struct ErrorDialog {
 	pub description: String,
 }
 
-impl PropertyHolder for ErrorDialog {
-	fn properties(&self) -> Layout {
+impl LayoutHolder for ErrorDialog {
+	fn layout(&self) -> Layout {
 		Layout::WidgetLayout(WidgetLayout::new(vec![
 			LayoutGroup::Row {
 				widgets: vec![TextLabel::new(&self.title).bold(true).widget_holder()],