Circle.yml update

[jandegr]

just some tweak to get the circleCI builds going again

[pgrandin]

Thanks Jan. I'm concerned that removing libgtk will disable gui_internal, but let's see.

[jandegr]

in a testbuild I get this from cmake in circle after the changes

--->>> gui
Enabled gtk ( GTK libs found )
Enabled internal ( Default )
Disabled qml ( Qt Declarative not found )

and in the output of the actual build

Scanning dependencies of target gui_internal
[ 4%] Building C object navit/gui/internal/CMakeFiles/gui_internal.dir/gui_internal.c.o
[ 4%] Building C object navit/gui/internal/CMakeFiles/gui_internal.dir/gui_internal_bookmark.c.o
[ 4%] Building C object navit/gui/internal/CMakeFiles/gui_internal.dir/gui_internal_command.c.o
[ 4%] Building C object navit/gui/internal/CMakeFiles/gui_internal.dir/gui_internal_gesture.c.o
[ 5%] Building C object navit/gui/internal/CMakeFiles/gui_internal.dir/gui_internal_html.c.o
[ 5%] Building C object navit/gui/internal/CMakeFiles/gui_internal.dir/gui_internal_menu.c.o
[ 5%] Building C object navit/gui/internal/CMakeFiles/gui_internal.dir/gui_internal_poi.c.o
[ 5%] Building C object navit/gui/internal/CMakeFiles/gui_internal.dir/gui_internal_search.c.o
[ 5%] Building C object navit/gui/internal/CMakeFiles/gui_internal.dir/gui_internal_widget.c.o
[ 5%] Building C object navit/gui/internal/CMakeFiles/gui_internal.dir/gui_internal_keyboard.c.o
Linking C shared module .libs/libgui_internal.so