Correctly handle back button on start screens

On the inital screens the android back button should quit the app, or if
on the map screen and you've started a report it should cancel it. Add
in a default back method to FMSView and an override method for the map,
exising report and offline screens
Fixes #117

1 files changed, 4 insertions, 0 deletions

diff --git a/src/js/views/offline.js b/src/js/views/offline.js
index ff28e4b..c90cd90 100644
--- a/src/js/views/offline.js
+++ b/src/js/views/offline.js
@@ -22,6 +22,10 @@
                 'blur textarea': 'toggleNextButton'
             },
 
+            _back: function() {
+                navigator.app.exitApp();
+            },
+
             draftHasContent: function() {
                 var hasContent = false;