Make use of layer control status function in main script
Layers display status now persist between session
More updates to url links to be compatible with stock intel map
Merge pull request #223 from Xelio/patch-layer-status-persist

Make use of layer control status function in main script
Merge pull request #224 from Fragger/more-portal-link-fixes

More updates to url links to be compatible with stock intel map
update build.py for fdroid - a 'copyonly' mode that prepares the mobile/assets folder but doesn't run 'ant'
Merge master