Added 'bower_components' to ignore list
Added tests for aria accessibility support

Implementing support for aria attributes to support web accessibility with the
parsley library.  Tests that the `aria-label` attribute gets overriden with the
label for an input and the validation messages and that the other elements get
proper aria properties.
Initial effort of adding the accessibility support

Detects the label of each input and sets the `aria-label` attributeto be the
label, then updates this attribute with the validation errors upon changes in
the validation tests.  The default validation container also gets aria
attributes.
Compiled distributables with changes