GH-135: Made URI creation OS independent when firing file change events.
GH-135: Made URI creation OS independent when firing file change events.

Signed-off-by: Akos Kitta <5adc53eb8928d8424ddf49bf102dba40aa33cffe@gmail.com>
epatpol/theia-1,lmcgupe/theia,epatpol/theia-1,epatpol/theia-1,lmcgupe/theiagreenkeeperTest,hexa00/theia,lmcgupe/theiagreenkeeperTest,hexa00/theia,lmcgupe/theiagreenkeeperTest,lmcgupe/theia