test-webpage: return of injectJS should be tested
test-webpage-listeners: bad file url on windows

the url of the file should be well formed on windows.

Refs #65
Fixes path issues on Windows

Path manipulated by scripts should be converted in
good path format on Windows.

Closes #65
Fixes issues with Cygwin

Path of the profile and of the application.ini were not
in the good format.
there was also an issue with the --envs parameter.

Closes #4
test-webpage-keyevent: change a test for windows

shift+del has an effect on windows, not on linux. change
it to shift+end.