R1:87db48289705

Adds "Locate File" input to every browse directory view in Diffusion

Summary:
Ref T15645

The very helpful "Locate File" input in Diffusion was so far only visible in the homepage route of any repository (`/repository`).

With this revision you can now locate a file from every browsed directory and in any selected commit.

The finder was already "directory sensitive" meaning: if you are trying to locate a file from within a browsed directory, only the children of this path will be searched.

For the…