[noace] fix default ip address for yarpserver on fresh install
Fix typo
Print a better error when ACE is not found and SKIP_ACE not enabled

Fixes #144
[yarpserver] get permission to edit config file if needed, see #142

If the set of network interfaces changes, yarpserver's opinion of
which address is a good one to advertise for itself may change.
This commit adds better communication about that change, and
asks for permission to make the change if the user has not
already granted it.
Merge pull request #145 from drdanz/ACE_better_error

 Print a better error when ACE is not found and SKIP_ACE not enabled
Exit cleanly if playback with no cameras
Documentation fixes
Add info when playback finishing with no loop
Print resolution and fps info
Print openni and nite version info
Remove debug line