[Fix] Temporarily disable non-implemented sections in the menu.

 Those sections will be reactivated when implemented.
[Enhancement] Add a feedback menu item, so as to collect user feedback
[Enhancement] Add a feedback menu item, so as to collect user feedback
[Enhancement] [Feedback] Move literal strings to resources file
[Clean-up]
[Fix] Fix carriage return
[Enhancement] Add some 3rd-party libs in About dialog
[Enhancement] Add some 3rd-party libs in About dialog
[Enhancement] Add some 3rd-party libs in About dialog
[Enhancement] Open "add_router" dialog form if routers list is empty
[Enhancement] Make sure to properly dismiss dialog forms when activities are destroyed
[Fix] Fix potential NPE
[Enhancement] Remove child views prior to adding them: this fixes an IllegalStateException when screen is rotated
[Fix] Display 'Add Router' dialog only after user clicks on 'ok' in Changelog popup
[Fix] Display 'Add Router' dialog only after user clicks on 'ok' in Changelog popup
[Enhancement] Fix Syslog tile view
[Enhancement] Fix Syslog tile view
[Enhancement] Fix Syslog tile view