Remove useless files

Signed-off-by: Luca Ottaviano <lottaviano@develer.com>
Remove useless directive in .pro file

Signed-off-by: Luca Ottaviano <lottaviano@develer.com>
Allow multiple series on a single chart

Signed-off-by: Luca Ottaviano <lottaviano@develer.com>
Whitespace fix

Signed-off-by: Luca Ottaviano <lottaviano@develer.com>
Move the color property from LineChart to LineSeries

Signed-off-by: Luca Ottaviano <lottaviano@develer.com>