Remove the path_helper workaround

https://github.com/sorin-ionescu/prezto/commit/6fd00449a67ca1c14af1b8d5d3a582945057b2cf
Manually set locale

https://github.com/sorin-ionescu/prezto/commit/6e65349c451c7e6d8b799469179b67713d1f18e3
Adds trash util