Only use pretty format in english, use regular numeric date+time in
other cases. After 1.0 we should try get this working on all languages.
keep_screen_on pref default to false
1068 - Change the name of the app to Mozilla Stumbler
1069 - Keeping screen on pref only takes effect when scanning.
Changed pref to say: keep screen on while scanning
changed function to keepScreenOn as requested
Merge pull request #1072 from garvankeeley/1066-last-upload-time

1066: Only use pretty format in english, use regular numeric date+time in other cases
Merge pull request #1070 from cascheberg/fix

Change keep_screen_on pref default to false
Merge pull request #1073 from garvankeeley/1068-app-name-change

1068 - Change the name of the app to Mozilla Stumbler
Merge pull request #1074 from garvankeeley/1069-keep-screen-on-fix

1069 - Keeping screen on pref only takes effect when scanning.