please add a filter-by-filename mechanism to the "Unstaged files" and "Staged files" lists

The current interface makes it extremely hard to to locate a specific file (or a specific type of files) within the lists I mentioned in the summary.

Right now, for example I have about 300 modified .cs files and 15 *.csproj files, and I want to revert the changes I made to che csproj files. there is no file-name filtering option available, so I can't type anywhere ".csproj" and have just those files displayed, I have to manually browse the list and select them individually. This is error prone and annoying (yes, I know I can use the console, but this is a so trivial and every-day task that I can't wrap my head around about the fact that sourcetree doesn't support this).

also a "detail" list