Fix replacing d in month name

[renatomaric]

Fix replacing d in month name:

How to reproduce the bug:

• Set language to Croatian: language="hr"
• Use format: format="dd. MMMM yyyy"
• Select any day in November (Croatian: Studeni)
• Bug: Input value is 11. Stu11eni 2016 instead 11. Studeni 2016

Fix:
In formatDate method replacing d and dd have to be before replacing month.

[coveralls]

Coverage remained the same at 99.19% when pulling e872d88 on renatomaric:master into 2257a01 on charliekassel:master.

[coveralls]

Coverage remained the same at 99.19% when pulling e872d88 on renatomaric:master into 2257a01 on charliekassel:master.

[coveralls]

Coverage remained the same at 99.19% when pulling a1f79e4 on renatomaric:master into 2257a01 on charliekassel:master.

[charliekassel]

Hi @renatomaric, thanks for your contribution!
Can you please separate this into two PR's as they do different things.

For the class, maybe it's better to put on the div.datepicker element so everything can be styled insider it to user preferences. This would solve #43

As for the date format, my solution is not very robust :(
I thinking of breaking this out into it's own library or biting the bullet and just using moment.
But put in your PR and I'll pull and write some tests against it, as I think their were issues for English when the day was the first item replaced.