Provide the correct rev for inline edits to FileWebLink

For an inline edit the correct rev is something like
  refs/users/00/1000000/edit-51/3
but the rev handed over to FileWebLink was something like
  refs/changes/51/51/0

This wrong rev was not resolvable.

Change-Id: If959be8667df5373f4020ae364ba978e798566b3
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
Move Anchor creation to WebLinkInfo

Change-Id: Ia763de5f5e49df166ce549454d1a64d3d3c8c374
Merge "Provide the correct rev for inline edits to FileWebLink"