GUI: Terminal command: minor improvements

* Use mono font for terminal command input
* Recognize 'exit' command (go to main page)

Change-Id: I5f383cd8d19959a49d2ae0b18f839b86e4145693
diff --git a/gui/devices/watch/res/watch.xml b/gui/devices/watch/res/watch.xml
index a86b07c..0169a99 100644
--- a/gui/devices/watch/res/watch.xml
+++ b/gui/devices/watch/res/watch.xml
@@ -3389,6 +3389,7 @@
 				<condition var1="tw_terminal_state" var2="0" />
 				<placement x="%col1_x%" y="%terminal_text_y%" w="%input_width%" h="%input_height%" placement="0" />
 				<text>%tw_terminal_command%</text>
+				<font resource="fixed" color="%text_color%" />
 				<data name="tw_terminal_command" />
 				<restrict minlen="1" />
 				<action function="terminalcommand">%tw_terminal_command%</action>