Fixes to run better on docker image

• Tolerate when the $HOME/.config/kicad dir is absent
• Support missing *-lib-table in user config
• eeschema_do also reports warnings as a warning message

Fixed missing dependencies

To test the X server we use x11 utils, but wasn't in the package dependencies.
Also: KiCad recommends xsltproc, but we need it for XML update, so now we force this dependency.

Changed colors

Just changed debug and info colors

KIplot's inner layers support

Just to integrate better with kiplot

ERC loglevels and ERC output fixed

Made the ERC loglevel errors negative.
Suppressed the eeschema stdout to avoid printing the report to the console.

Adding --save to Run DRC

• Added --save option to pcbnew_run_drc
• Added --list option to pcbnew_print_layers

First public release

Currently tested and working:

• Exporting schematics to PDF and SVG
• Exporting layouts to PDF
• Running ERC on schematics
• Running DRC on layouts
• Netlist generation
• Basic BoM generation (mainly the XML needed for KiBoM)