SVN_SILENT made messages (.desktop file)
webkit: always specify both text color and background color, even on light themes

Soem of these themes are in fact strange enough that black text is not very well
visible. I hpoe this does not introduce any funny side effects.

The improvement shall be visible i.e. in KDE's "Wonton Soup" theme. I really
wonder who came up with these names...
webkit: initialize palette-depending colors for hyperlinks, too
webkit: palette-dependant color for the quote indicator bar
GUI: add support for color tinting

The idea was suggested by Thomas Lübking, the implementation is shamelessly
stolen from Qt5's qtquick1 module (src/declarative/qml/qdeclarativeengine.cpp,
the usual Qt licensing).
GUI: use theme-dependent colors for the FindBar search result indicators

Thanks to Thomas Lübking for his suggestion.
webkit: respect the theme colors when displaying the quote indicator