shutdown all connections properly if network contact to hub is lost
a preliminary attempt at recovering from loss of contact to the hub
added time since last seen
fixed a bug in setting time since last seen. graceful error handling for ping output parse failure. closes #185
better pretty printing in remote_gateway_info_script. update time_last_seen after the first failure as well
fixed typos in master api. closes #207
fixes mini type in log output
Merge pull request #210 from robotics-in-concert/typo_fix

fixes mini type in log output
Merge pull request #209 from piyushk/fix_issue_207

Fixed typos in master api.
Merge pull request #206 from piyushk/establish_connection_statistics

Establish connection statistics (Part 2)
new exceptions and slightly altered icon handling.
wiser resource finding with extension checking.
variable length split, so pull from the start, not the back, closes #211
pep8
bugfix find resource extension handling.
base ResouceNotFoundException on IOError for backwards and future compatibility.
titles for gnome-terminal needed disable-title in roslaunch.
merged gateway_recovery