start update timer before spawning threads in new-maas
pep8 fixes

Signed-off-by: Adam Stokes <adam.stokes@ubuntu.com>
update landscape dialog box look

Signed-off-by: Adam Stokes <adam.stokes@ubuntu.com>
add more context to the network interface selector

Signed-off-by: Adam Stokes <adam.stokes@ubuntu.com>
add netutils reference doc

Signed-off-by: Adam Stokes <adam.stokes@ubuntu.com>
update index doc

Add mailing list link and netutils into TOC

Signed-off-by: Adam Stokes <adam.stokes@ubuntu.com>
move password to newline in dialog

Signed-off-by: Adam Stokes <adam.stokes@ubuntu.com>
do not remove alarms on non-main threads
remove extra Deploying landscape task
initial idea to pass a decorator arg to call back to display controller in case of exception:
Show basic error dialog and quit when async install threads signal exception. Don't use SystemExit because it's not for errors and is not caught by 'catch Exception:'