4.0.0.beta.0: Refactor for customization, fix section links
- Refactor to allow easier customization using a custom LESS file that gets compiled
- Prevent headings from being blocked by the header when you click a section link (for example, when you click a link in the table of contents so you jump down to the corresponding section)
- Increment version number (4.0.0 beta.0)
Change-Id: I488ae38efeb69bbf9fa38eb0be0257f092a9609f