Check ARIA and WCAG 2.0 features

[fnagel]

Check already implemented ARIA and WCAG 2.0 features to improve usability and accessibility.

[fnagel]

I will check the whole script with the guidelines provided by the W3C (WCAG 2.0 and ARIA 1.0) and open new issues for each problem. Help is appreciated!

Please open a new issue for each problem with direct link to the guideline in one of the above documents (and its e.g. technique docs). A possible solution would be nice, too :-)

[fnagel]

I will check the whole script against the W3C WCAG 2.0, W3C ARIA 1.0 and its technique docs.

Any help is appriciated. Please open a new issue for each problem and provide a direct link to the specific guideline(s).

[fnagel]

Related to #138

[fnagel]

Development is stopped atm as I work on the new version of selectmenu (see #140).

Patches to improve this branch of selectmenu are still welcome and will be included!