SYSTEM MONITOR: Setting to change how frequently heartbeat and system monitor status is sent, with a default of once per second for Pixhawk compatibility
CONSOLE: More intelligent version comparison
CONSOLE: Fix bug with RINEX number of observations header
Merge remote-tracking branch 'swift-nav/master'
SIMULATOR: Differentiate between Float and RTK simulation, and set flags and IAR accordingly
CONSOLE: Fix bug when using PySide instead of PyQt4

Closes #45
CONSOLE: Fix bug when using wx backend.

Don't import things directly from Qt without checking.

Hopefully closes #46
CONSOLE: Make window wider

Too narrow on OS X to read the tab labels.
Merge pull request #48 from fnoble/console_updates

Miscellaneous and sundry console updates
CONSOLE: Fix bug with RINEX time of first ons

Needed to write RINEX header after decoding the obs.