No strings are shown in the admin interface

[rimas-kudelis]

I've installed the 64-bit package on Ubuntu 14.04. The daemon starts, but when I navigate to http://my_server_name:1220/, I'm presented with a page with every single localizable string missing.

I guess it is due to this:

As of v5.18.0, both keys and values stored in %ENV are stringified.

As a workadound, I've added use JSON statements to adminprotocol-lib.pl, streamingadminserver.pl and tag_formats.pl, and am setting $ENV variables to JSON-encoded representations of message hashes in streamingadminserver.pl, and then decoding these hashes back from JSON in the other two files. Not sure if that is the best approach though.