[FIX] Allow more paths in CFileUtils::RemoteAccessAllowed

As found by @Voyager1 there's some more path that should be allowed since they are used by addons or internally.
Perhaps more are needed, and perhaps a way to differentiate UPNP / Remote JSON / Addon JSON is needed.
Merge pull request #2828 from Tolriq/fix_remoteaccess

allow more paths in CFileUtils::RemoteAccessAllowed (fixes some addons and JSON-RPC clients)