Made collection RIDs hierarchical.
Made collection RIDs hierarchical.

svn path=/branches/work/akonadi-ports/kdepim/; revision=1010688

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi