Add span wrappers around label and input contents.

- `label.control-label` is now surrounded with `span.form-label`
- `input_content` (f.e. all data inputs & hint row) is now surrounded with `span.form-wrapper`

You can style them to f.e. make your form look more like `.form-horizontal`.
Merge pull request #1 from jtomaszewski/master

Add span wrappers around label and input contents.