Fixes IE7 search button position in WET theme dir='rtl'
Fixes IE7 .mb-highlight element for dir='rtl'
Fixes IE7 horizontal page shift on load when dir='rtl'
Fixes IE7 .button-group position when dir='rtl'
Merge pull request #1239 from patheard/ie7-rtl-fixes

Fixes #1052 remaining IE7 rtl issues