Changed English string.xml

Changed "menu_app_settings" to something more accurate regarding its function
Merge pull request #519 from tonymanou/patch-1

Changed English strings.xml
Updated changelog
Reorganized menu items for the main activity (v2)

Moved 'Settings', 'Template', 'Report bug' and 'Check for update' at the bottom of the menu list, just above 'About'.
Merge pull request #521 from tonymanou/patch-2

Reorganized menu items for the main activity (v2)
Updated changelog