Issue #342: 0.4.0: git repo is detected as False (conservancy/kallithea)

[Edmund Wong]

New issue 342: 0.4.0: git repo is detected as False
https://bitbucket.org/conservancy/kallithea/issues/342/040-git-repo-is-detected-as-false

Edmund Wong:

While trying to figure out why Kallithea was ignoring the pushes (but still allowing said pushes to the repo) and not showing the changesets in the UI,  I looked at the debug logs and came across something which struck me as strange. 

```

2019-04-03 01:10:57.903 DEBUG [kallithea.lib.middleware.simplegit] pathinfo: /infrastructure/testgit2 detected as Git False
2019-04-03 01:10:57.903 DEBUG [kallithea.lib.middleware.simplehg] pathinfo: /infrastructure/testgit2 detected as Mercurial False

```

infrastructure/testgit2 (a new git repo) isn't being detected as a Git repo.