Improve 'Create New' button, make 'All Operations' expanded by default

Author: SamCarlberg

ui/src/main/resources/edu/wpi/grip/ui/CustomOperationsList.fxml

@@ -10,7 +10,7 @@
     <ScrollPane fitToHeight="true" fitToWidth="true" hbarPolicy="NEVER" VBox.vgrow="ALWAYS">
         <VBox>
             <VBox fx:id="operations"/>
-            <Button text="Create New" onAction="#createNewPythonOperation"/>
+            <Button text="Create New" onAction="#createNewPythonOperation" maxWidth="Infinity"/>
         </VBox>
     </ScrollPane>
 </TitledPane>

ui/src/main/resources/edu/wpi/grip/ui/Palette.fxml

@@ -8,7 +8,7 @@
 <VBox styleClass="palette" fx:controller="edu.wpi.grip.ui.PaletteController"
       xmlns:fx="http://javafx.com/fxml/1" onKeyPressed="operationSearch.requestFocus()" fx:id="root">
     <Label styleClass="pane-title" text="Operation Palette" maxWidth="Infinity"/>
-    <Accordion VBox.vgrow="ALWAYS">
+    <Accordion VBox.vgrow="ALWAYS" expandedPane="$allOperations">
         <panes>
             <fx:include source="OperationList.fxml" fx:id="allOperations" text="All"/>
             <fx:include source="OperationList.fxml" fx:id="imgprocOperations" text="Image Processing"/>