StringUtils: add Paramify() method to escape strings before passing them to builtins methods
[test] add unit test for StringUtils::Paramify
jsonrpc: fix passing of paths to builtin methods (fixes #14066)
jsonrpc: bump version to 6.0.3
CFavourites: replace Paramify() implementation with StringUtils::Paramify()
Merge pull request #2312 from Montellese/14066_builtins_paths

jsonrpc: fix (odd) paths being passed to builtins methods