Log Information UI

Added Log Information button under the new View tab. Created basic UI in
loginformation.ui. and then made ui_loginformation.py  using PySide.
I think we may have to be slightly smarter here about which directories we choose, we don't have permission to write to /var/log/ on linux.  Some of our options:

 - write the log files to the same place as the application settings get written
 - write to the system log, not my favourite option