CsrfProtection: ignores setValue(), is not erased by Form::setValues() [Closes #39][Closes #40]
adding a support for rendering an id HTML attribute into default renderer

added tests for group id option
netteforms.js: Change order of showing error message and focusing element. In Firefox element lost focus when alert is invoked.
netteForms.js: fixed xor operation, Nette.toggle visibility is boolean
RadioList: added item label prototype [fixes #31]
Container: added addMultiUpload()
TextBase: added setMaxLength()
tests: added test for HiddenField persistent value
TextInput: removed empty value=""