Removed wide/large-format layouts for now.  For larger screens, will need to rework how the side-by-side WSPR/details layout is accomplished.
Refactored WsprNetViewerSyncAdaper.java to reduce cyclomatic count.  Removed remaining code related to reading WSPR data from a canned file or built-in data.
Altered max number of 'toasts' in PropagationMapsFragment.java.
Changed version to 0.17beta3, versionCode 10.