Editors' proposal for membership predicate names

Based on discussions on at last couple of WG meetings, it was discussed
that the editors would come up with a proposal for better membership
predicate names as the previous ones are a little dated with some of the
recent terminology and concepts [1] .  Since we are low on time, the idea
is to get a quick thumbs up/down on it at the call on Monday [2].

Here are the proposed changes:

ldp:containerResource    => ldp:membershipResource

ldp:containsRelation        => ldp:hasMemberRelation

ldp:containedByRelation => ldp:isMemberOfRelation

[1] - https://dvcs.w3.org/hg/ldpwg/raw-file/default/ldp.html#terms
[2] - http://www.w3.org/2012/ldp/wiki/Meetings:Telecon2014.02.17

Regards,
Steve Speicher