hgview #105169 allow to quickly switch to a nested repo from the ui [validation pending]

This should happen automatically when browsing a repository containing nested repositories.

Actually subrepo, guestrepo and confman extensions are know to manage nested repositories

Example of UI interface: repository list given in a dropdown list.

done in1.9.0
load left0.000
closed by#15573df7adae [qt] subrepo: add support for nested repositories (closes #105169)
patch[qt] Do not display the quick switch combo-box outside nested setup [applied][qt] nested: add support for nested repositories (closes #105169) [applied][qt] subrepo: add support for subrepo repositories (closes #105169) [folded]