versafix: outlook 2007/13 social icon spacing issue

[bago]

Horizontal spacing between social icons is lost in outlook(word) 2007/2010/2013.

[bago]

Fixed.

Outlook (word based) does not support hspace unless it has align="".
Outlook collapse hspaces for adjacent images while other browsers do not (so we override hspace with half margin-left/right)
IE7 based clients sums css margins to hspace (so we need a quirks *property hack with negative half margin)

[bago]

Reopening this because of #23 (social icons ordering)

[bago]

Another attempt with a completely different approach. Now we use a simpler solutions, even if the spacing is less predictable (depending on the client it may be from 3px to 10px). In the end they are a simple sequence of icons, so this sounds acceptable.