Unified the first badge row to use the same colors as reactos.org
Moved build related badges to 'Build' section
Fixed all links to use https and to be semantically correct
Replaced 'Tweet' badge with 'Follow', 'Flattr' with more general 'donate'
Added a sentence about donation
Centered second badge row by using HTML code
Moved Coverity scan to the top, Flattr and Tweet - to the bottom
Linked "Download" and "Release" to reactos.org