Support Angular v 1.3

[SSchaaf]

This request have code changes to support angular v1.3.

Also minor fixes :

• when running demo in a relative url, have some http 404
• when getting numeric values from backend the field opens with an empty value

[CosticaPuntaru]

can we merge this pr? look like it fixes the issues with angular 1.4.2 too, i need it :D

[bojanbjelic]

+1, please merge