currently, the UI assumes that you are a developer and manage your source code with rhodecode/hg. but this is only one of the usual applications of a version control system. users doing something else with it might be a bit confused when confronted with stuff that does not apply to them.
search offers either "search in file names" (ok) or "search in sourcecode" (assumes that you manage src). it should rather offer "search in file contents".
summary: "trending source files" -> "files types"