Append omega to content classes

Fixes #4179
Order#available_payment_methods should also return payment methods marked as 'Both'

Fixes #4199
Add changelog for #4199
Bump acts_as_list to 0.3.0
Google analytics fix for IE8 SSL warning

Undoes #2977 which while cleaner in principle breaks IE8 SSL support.  I have verified this in my production app with a local override of `_google_analytics.html.erb`.

Fixes #4202
Reverts #2977
Ensure duplicate payment methods are not returned by Order#available_payment_methods
Allow any activemerchant 1.42 version