DeviceListDialog: Render status line in small font
Fonts: Renamed FontHeight variable to font_height
Fonts: Don't draw map labels in italic

Italic is hard to read and the font size is indicator enough that these
labels are not waypoints, but topography.
Manual XCSoar-Handbuch: Move the current de wrap of the manual into a subdirectory, keep it as "Blitzeinstieg" and free the de directory for a 1:1 translation.
LX1600: Updated SetupNMEA() with information from the documentation

We have the official documentation now for these devices
LX1600: Added LXWP5 sentence to SetupNMEA() request string
LX1600: Added SaveToEEPROM() and FactoryReset() functions
manual.mk: Prepared manual build for a German translation,
added the path to the English version as last default to avoid copies for not jet translated file.
Manual: Reworked icons for config reference, gesture, and tip now in svg format.
Manual: Put new margin icons in xc manual style and deleted the replaced icon files.
Manual: Warning sign in same style as other margin symbols.