system requirements rephrasing to explicitly includes Mac
unbolding things
Merge branch 'master' of git://git.tails.boum.org/tails into doc/system_requirements_improvements
Revert "unbolding things"

This reverts commit d5d6e82d82017de1aeb7849fcaca01d154791230.

Either unbold everything on this page, and fix the PO files, either leave the
bold for scanability on each bullet point.
updated PO files