Double slash in appDir/wwwDir

[Lukáš Čellár]

Paths in NetteDIModule contains double slash // and cause problems in template path normalization used in Latte\Loaders\FileLoader::normalizePath

appDir => "/dev/my-project/tests/functional//../../app"
wwwDir => "/dev/my-project/tests/functional//../../www" 

Solutiion:
trim tailing slash in _beforeSuite method

[Milan Felix Šulc]

Your PR was merged, I am closing it here.

#27