Added the ability to lazy load BoundaryLine features from OS Data and built this into the program so that if no xml file has been loaded with Bounded Areas in then one is able to select any of the root areas that are known to the Ordnance Survey
Changed child seeking from requireing the containing of each point on the edge of a Polygon to requiring only that the centre of gravity os contained withing the parent. This method is also used if the centre of gravity is external to the child but a warning is printed to the log file
Merge pull request #2 from etothepii/feature/loadsKNownBoundaryLinesToMasterTypeComboBox

Feature/loads known boundary lines to master type combo box