Fixup reboot after install variables

* Create correctly named data manager variable 'tw_install_reboot'
* Make configurable through Settings
* Remove closing tag space in theme files (not personal preference,
  but should match surrounding code style)
* Fix the "two presses needed to enable" issue for the checkbox on the
  install screen

Change-Id: I0ceb60b4888a672e2f0ecb5672b03cc86615621a
diff --git a/gui/theme/common/landscape.xml b/gui/theme/common/landscape.xml
index 9272db0..df68a3a 100644
--- a/gui/theme/common/landscape.xml
+++ b/gui/theme/common/landscape.xml
@@ -441,9 +441,9 @@
 			</checkbox>
 
 			<checkbox>
-				<placement x="%col1_x_right%" y="%row12_y%" />
+				<placement x="%col1_x_right%" y="%row12_y%"/>
 				<text>{@install_reboot_chk=Reboot after installation is complete}</text>
-				<data variable="tw_install_reboot" />
+				<data variable="tw_install_reboot"/>
 			</checkbox>
 
 			<button style="main_button_half_width">
@@ -2771,6 +2771,9 @@
 				<listitem name="{@zip_sig_chk=Zip signature verification}">
 					<data variable="tw_signed_zip_verify"/>
 				</listitem>
+				<listitem name="{@install_reboot_chk=Reboot after installation is complete}">
+					<data variable="tw_install_reboot"/>
+				</listitem>
 				<listitem name="{@use_rmrf_chk=Use rm -rf instead of formatting}">
 					<data variable="tw_rm_rf"/>
 				</listitem>