Merge dev to master (openhab#46)

Beta 0.1


* app will check your connection, when on metered connection it will connect to the remote url, otherwise take the normal url

* implemented demo url, disabled settings fields when demomode is checked

* openhab#4 Implemented demo mode

* navigating forward in a sitemap works

* 7 implement new design (openhab#10)

* app will check your connection, when on metered connection it will connect to the remote url, otherwise take the normal url

* implemented demo url, disabled settings fields when demomode is checked

* openhab#4 Implemented demo mode

* navigating forward in a sitemap works

* Implemented NavigationService for widgets

* Added styled Switch widget

* add SliderWidget

* added slider widget

* fix merge issues

* Added section switch widget (openhab#14)

* 15 add color widget (openhab#16)

* fix openhab#11

* First step in fixing layout issues is done

* generic UI fixes

* added color widget, fixes openhab#15

* added colorchanged handling and default value

* fix widget bug

* 15 add color widget (openhab#17)

* fix openhab#11

* First step in fixing layout issues is done

* generic UI fixes

* added color widget, fixes openhab#15

* added colorchanged handling and default value

* fix widget bug

* Made frame icon smaller and next to label (openhab#27)

* Added MJPEG widget (openhab#28)

* Fixed slider bug where click didn't trigger change event (openhab#29)

* fixes openhab#22, background image gets a dark overlay to make titles more visible (openhab#30)

* Fixed nullreference on app launch and url set (openhab#31)

* added app title, icon and splashscreen (openhab#32)

* fixed issue openhab#33 with not working demo mode (openhab#34)

* added demo mode check to url check

* Replaced ListViewItemPresenter with UIElement structure like dokumented here - https://msdn.microsoft.com/de-de/library/windows/apps/mt299136.aspx (openhab#35)

Fixes issue openhab#21

* Fixes openhab#23 style of settingspage matches app design (openhab#37)

* Added support for authorization

* 38-AddSupportForUsernameAndPassword (openhab#39)

* Fixes openhab#23 style of settingspage matches app design

* Added support for authorization

* Fixes openhab#23 style of settingspage matches app design

* Added support for authorization

* Completed rollershutter widget (openhab#40)

* Added capability to access private network for lokal openHAB instance access. (openhab#43)

issue openhab#41

* Fixes openhab#42 Crash on save with invalid url (openhab#45)

* change logo + disable colorpicker for now