Restructuring Language References

I've been thinking about restructuring the Java Guides because I find it
rather confusing. So I propose the following new structure, which takes
enhancements and new features into account as well. Any inputs would be
greatly appreciated!

Here are the main changes

• Moving the "Reference" into its own subsection, clearing out the main
  level
• Providing more information on using the APIs, also with 2.0 content.
• Getting started & tutorial mainly unchanged.

1. Getting Started
1.1 Preparations
1.2 Hello Couchbase
1.3 Working with Documents
1.4 Advanced Topics
1.5 Next Steps

2. Tutorial
2.1 Preparations
2.2 Quickstart
2.3 Connection Management
2.4 The Welcome Page
2.5 Managing Beers
2.6 Wrapping Up

3. Using the APIs
3.1 Connection Management
3.2 Retreiving Data
3.3 Mutating Data
3.4 Working with Views
3.5 Applying Persistence Constraints
3.6 Error Handling
3.7 JSON & Object Serialization
3.8 Design Document Management

4. Advanced Usage
4.1 Bulk Loading
4.2 Logging & Debugging

5. API Reference
5.1 Method Summary
5.2 Connecting & Disconnecting
5.3 Retreiving Data
5.4 Mutating Data
5.5 Management Operations
5.6 Other Useful Operations

A. Release Notes
B. Contributing
B.1 General Information
B.2 Source Code Styleguide