Fixed necessary constraint being removed

[izackp]

Had a problem while using aligning views inside of an autoresizable view.
The generated constraints for the OAStackView and it's subviews looked like this:
[View]-(0)-[View]-(0)-[View]-|

when it should look like:
|-[View]-(0)-[View]-(0)-[View]-|

[izackp]

NSArray *constraints = [self constraintsBetweenView:self andView:previousView inAxis:self.axis];
[self removeConstraints:constraints];

The code above removes the left and right constraints of the previousView.
The left constraint is never replaced only the right constraint is. This code creates a flag which determines if it is the previousView is the first view and replaces the missing constraint.

I don't know if this is the best way to fix this, but its working for me.

[nsomar]

Sorry for being late on this, I will definitely work on this tomorrow.

[nsomar]

Hey, I merged this branch from command line since I did a rebase on it. Now it works great.
Before closing this PR, can you confirm that current master solves your issue?

Thanks for your time :)

[Thomvis]

FWIW, I encountered layout issues that were solved by merging in the changes from this PR.

[izackp]

Sorry for the late response. Yea it works 👍

[nsomar]

I will be closing this as it seems to have solved @Thomvis and @izackp, thanks guys for your help :)

[izackp]

This problem is broken again (edit: nevermind, there was a bug with cocopods where :head was not pulling the latest commit. The simple solution was to update cocopods.)