[2.0] Use storeAs=dbRef as the new default setting for references

[coudenysj]

As suggested in 30285e4, the recommended setting of storeAs=dbRef will become the default setting in 2.0.

@malarzm I had to update my composer.json locally to be able to run phpunit (see #1463).

[malarzm]

@coudenysj thanks for the PR! Overally looks good, you have some places with commented out code in the tests though, I think you wanted to remove them? :)

About the phpunit thing, thanks for reminding me once again, duly noted to change that finally.

[coudenysj]

@malarzm The commented assertions are because I was not sure if I should remove the assertions or change the mapping information. I think I'll go with removing the assertions.

[malarzm]

@coudenysj would you mind rebasing this atop current odm-ng branch?

[coudenysj]

@malarzm done

[malarzm]

@coudenysj I think something went wrong as PR still has 11 commits instead of 2 you've made :)

[malarzm]

Also if you could squash these two that would allow me to push the green button instead of doing the merge manually ;)

[coudenysj]

The rebase was corrected, can't you merge pull requests with multiple commits?

[malarzm]

I can (and often I do) but the 2nd commit doesn't bring anything to the history so there's no point in having it :)

[coudenysj]

Correct. Done!

[malarzm]

Thank you! \o/