* Add encryption
In order to avoid the server being able to read the content of the scene, this PR implements local encryption and decryption. This implements the algorithm described in #610.
Right now the server doesn't support uploading binary files. I mocked the server with comments. @lipis, could you add support on the server and update this PR? I added a bunch of TODO: that tell you where to comment/uncomment in order to get the server flow going.
To test locally right now:
- Import: Open http://localhost:3000/#json=1234,5oYVOnGpWYPPTz19-PMYYw and see a square
- Export: Click the export link and see the right url with the private key + the encrypted binary in the console
Fixes#610
* backend_v2
* v2
* first draft of export to SVG. WIP
* enabled text rendeing - which is not quite right atm
* placeholder svg icon
* size the canvas based on the bounding box of elements
* Do not add opacity attributes if default
* render background rect
* Ensure arrows are in the same SVG group
* parse font-size from font
* export web fonts
* use fixed locations for fonts
* Rename export functions
* renamed export file
* oops broke the icon.
