use different results tables for different users, so we no longer need unique survey names
add use strict. closes #92
git attributes for line endings
stop using hex2bin for tokens. should probably shorten session tokens a little at some point, too lazy to change db scheme now.
pass along more hidden data to openCPU
use strict in some functions in survey.js
Merge branch 'develop' of https://github.com/cyriltata/formr.org into cyriltata-develop
Without changes involving only whitespace (I hope)

Conflicts:
	.gitattributes
	Model/Run.php
	Model/RunUnit.php
	webroot/assets/main.js
	webroot/assets/run.js
	webroot/assets/survey.js
dumb whitespace commit
more dumb whitespace commit
Merge branch 'cyriltata-develop' into develop
Add run export/import
reverse incorrectly merged files
Fixed crlf issue