Story: v1.1 - shortening url - error when sharing

[AnaBelgun]

When a user tried to add 8 scenes to a story and share it, he got the following error:

upon investigation, it seems there is a bit of outstanding configuration that needs to be done for the URL shortening to work

[kring]

This is a guess, but I suspect we've hit the max size limit on the POST of the sharing data.

[kring]

We shouldn't remove the limit entirely, but we can e.g. double it.

[rowanwins]

Requires updating terriajs to using terriajs-server@3.0.1