Replace alert-error by alert-danger, and remove alert-error (no longer exists in Boostrap 3)
Add function to TbActiveForm to create custom active inputs (like CCaptcha)
Make TbFormInputElement consistent with parent CFormInputElement:
1. add $coreTypes. Note that this change is NOT backwards compatible (although previous behavior was undocumented).
2. use class or path alias as $type.

With these changes you can use TbForm in the same manner as original CForm:
```php
'elements' => array(
    'name' => array('type' => 'text'),
    'date' => array('type' => 'zii.widgets.jui.CJuiDatePicker'),
),
```
Re-add yiistrap.less and the compiled versions that was removed earlier by mistake
Fix publishing of assets and add support for using Bootstrap through a CDN (fixes #211)
Update composer.lock to include twbs/bootstrap 3.1.1
Minor improvements to TbActiveForm.php
Merge pull request #236 from marcovtwout/bs3-fix-alert-color-error

Bs3 fix alert color error
Merge pull request #238 from marcovtwout/bs3-add-activeform-custom-control-group

Bs3 add activeform custom control group
Merge pull request #239 from marcovtwout/bs3-improve-TbFormInputElement-follow-parent-core-types

bs3 Make TbFormInputElement consistent with parent CFormInputElement:
Add support for hidden fields in the form builder (#227)
Refactor TbFormInputElement.php a bit