.project enhancement

- Set new color to background of each project;
- Change some styles from readMore/readLess;
#23 Fix paddings when in a larger displays

IMPORTANT: We still have a small bug in .project .intro why cause a
wrong alignment in >550px wide displays. I will fix it in other
opportunity
#23 Fix menu to much close of logo in >768px wide displays
Bigger line-height to > 768px displays
#11 Fix feedback message at the bottom of the .mainHeader

Like @mpontas  ask here:
https://github.com/Aerochimps/aerochimps-dot-com/issues/11#issuecomment-
38500997
#24 Size and space adjustments

- Small fix to align the top of .illustrate with .project > header;
- .project .description now have the same width of .people .description;