Adding unicode-bidi isolation to user names in agendas

User names are written in a mix of English and Hebrew. To make
sure that the are shown in the corrent order, unicode-bidi: isolate
is added to CSS. It's a new CSS3 feature, supported in Webkit and Gecko.
Internet Explorer is not supposed to be affected.
Nesting LESS
No hardcode pending_suggestion url,query if needed
PR #94

Merge branch 'bidi-isolate-less' of https://github.com/amire80/Open-Knesset