++ angles, planes, bugfixes, view fixes, model fixes

++ play/pause/stop, mission management with database and serialized
missions, new model views, model attitude, bugfix XWalk now stable, db
loader project included, reset configuration and database options,
confirm dialogs for important options.

++ Installer of Orekit data default files, loaded by DirectoryCrawler
without compression, splash screen, about, dialogs, retaining fragments,
XWalk6-5 beta, bugfixes, dark style, local simulator without missions
nor list. 

Crosswalk, JavascriptInterfaces, Sphere, Android preferences