Allow flashing of images via the GUI

- Use the Images... button in the lower right of the zip install
  page
- Unify image flashing functions between restore and image flash
- boot and recovery partitions are flashable by default
- use fstab flag flashimg=1 or 0 to override defaults
- file system partitions are currently not flashable

Change-Id: I822dc446030543c55d2153e219d67a1292374ffc
diff --git a/gui/devices/1024x600/res/ui.xml b/gui/devices/1024x600/res/ui.xml
index 7b7ad8c..1669d45 100644
--- a/gui/devices/1024x600/res/ui.xml
+++ b/gui/devices/1024x600/res/ui.xml
@@ -192,6 +192,7 @@
 		<variable name="button_fill_half_height" value="50" />
 		<variable name="button_fill_quarter_height" value="30" />
 		<variable name="button_full_center_x" value="256" />
+		<variable name="flash_list_height" value="200" />
 		<variable name="backup_list_x" value="23" />
 		<variable name="backup_list_y" value="105" />
 		<variable name="backup_list_width" value="486" />