feat(scss): Add toaster.scss and node-sass compilator

[bastienmoulia]

I add a toaster.scss with node-sass to generate the CSS file (no change on that).

I put some variables in it (colors, icons, breakpoints) which are the main ones modified for me. But others can be added too.

[coveralls]

Coverage remained the same at 100.0% when pulling 488a38e on bastienmoulia:patch-scss into c8cdc2d on Stabzs:5.x.x/Target_Angular_5.

[Stabzs]

@bastienmoulia thanks a ton for doing this! This was on my backlog and I haven't been able to get to it yet so it is much appreciated!

Two things, if you could please:

1. It looks like some of the background images have shifted based on the regenerated toaster.css diff. Could you please double check those base 64 strings?

2. I'd like to fold this into the 5.x.x branch instead of master and push a second alpha build/package to confirm the final generation. This would then get pushed into the 5.x.x as a full release pending the current alpha validation which I should be wrapping up this week.

Thanks again!

[bastienmoulia]

@Stabzs Due to the order in the SCSS map, the class icon-* are not in the same order, but the images should be good.

I can make a PR in the branch 5.x.x this evening.

[Stabzs]

@bastienmoulia thanks for changing the target branch and sorry for the delayed response. Can you please resolve the conflicts against the new 5.x.x branch so that I can merge in? I reviewed your feedback on the SCSS mapping and I agree, that looks good!

[bastienmoulia]

I generate the package-lock.json from scratch because there was to many diff.

[Stabzs]

@bastienmoulia thanks again! I'll retest these changes and bump another package version.