PlayStation PNG renderer

[jmmelko]

• [x] create gamepad.css style sheet for SVG elements + refs
• [x] Rename style sheets
• [x] repair normal SVG elements to refer to the renamed sheets
• [x] Generate PNGs
• [x] Fix Resources.py
• [x] Adjust margins according to Kimus preference
• [x] Find/Replace svg.css by svg2png.css in original elements
• [x] Remove import of svg.css in mobile originals, and see if it works. Be sure to backup PNGs first!!
• [x] remove quotes around urls in @import url() in CSS
• [x] Handle repeats
• [x] Handle max line width and max num per lines: understand why the song line of single notes is taller than 110. Use Image.show()
• [x] Handle resize
• [x] Check y_predict
• [x] Add line number at the end: understand why a line number is added at the end of the first sheet
• [x] finish the renderer