fix stream wrapper to make initial encryption work
fix some confusion about paths relative to the files dir and to the data dir
fix some more paths
Fixed proxy class handing of read / write files
Various work on other classes
Merge pull request #2885 from FlorinPeter/files_encryption

fix performance issues
Fixed stream{} reading of encrypted files (stream_read())
Working on stream{} writing
Development snapshot
Development snapshot
Working on stream{} write