Refactored deprecations of latest symfony and twig releases

[peterrehm]

I did some small refactorings to update to comply with Symfony 2.7 and the upcoming Twig 2.0 release and to avoid the deprecation warnings.

It would be great if this could be merged and a new release could be created.

[peterrehm]

Any oppinion on that?

[isometriks]

I think we'd like to keep support for 2.3 right now so you would need to keep setDefaultOptions and call configureOptions from it as 2.3 is still supported for a while as was done in some of the form types

[peterrehm]

That is still the case on previous releases... I am just considering if I will continue to work on this on this repo or just on my fork.

[phiamo]

i would be pleased if we could merge this once ! thanks a lot!

[peterrehm]

Closing this PR as there has not been activity. If anyone needs functionality for 2.7 / 2.8 I did some additional work here: https://github.com/peterrehm/MopaBootstrapBundle/tree/pr2.3.x

[isometriks]

I would merge it of you didn't remove support for 2.3, it needs the BC layer of setDefaultOptions to call configureOptions. We can think about targeting 2.7 or 2.8+ for 4.0