DESC order for Tags on Source-Tab (BB-8943)

Example repo: https://bitbucket.org/tortoisehg/thg/src\\
I click at the selector box in the upper left corner, which says “default”. This pops up a little window with the tabs “Branches” and “Tags”. When I click on “Tags” I see version 0.0.1 listed, up to the current one. It could make sense to change the sorting order from ascending to descending, cause one typically does not want to go back so far, but just a few versions.