[#862]: Replace slashes for path with DIRECTORY_SEPARATOR

I suspect that the issue mentioned in #682 comes from the routing. The routing
uses '/' instead of directory separator and it would seem that this is not
translated to the OS' specific separator.

By replacing the '/' with DIRECTORY_SEPARATOR I hope it will solve the issue.
[874]: Inject version number with @version into template
Merge pull request #883 from mvriel/874

[874]: Inject version number with @version into template
Fix a fatal error when a parent interface could not be resolved
Add InterfaceDescriptor and children to linker
Methods should not be interpreted as functions
If the visibility is not set it should be interpreted as public
Inheritance was not fully implemented; class and interface is expanded
Show existing typehint with arguments if no @param tag is present
Fix fatal error when interface extends another
Merge branch '874' into release-2.0
Committing changelog
Updating responsive-twig template
Bump version
Commit updated package.xml
Merge branch 'release-2.0' into develop
[#889]: Fixed display of packages on the frontpage
Merge pull request #892 from mvriel/889

[#889]: Fixed display of packages on the frontpage
Merge pull request #893 from mvriel/889

889
Bump version