Fixed some syntax errors

The `Zend\Code\Generator\ClassGenerator` class does not have a `setMethod` method which takes a `Zend\Code\Generator\MethodGenerator` param. Instead the `addMethodFromGenerator` method exists.

Also an object of type `Zend\Code\Generator\FileGenerator` cannot be echoed, the `generate` method should be called instead.
Authentication\DbTable documented as deprecated
zend.db.row-gateway.rst populate call

In order to update the row, second parameter of populate ($rowExistsInDatabase) must be true
Removed outdated pages
Updated installation and project structure pages
Removed project structure page
Provided the new in-depth tutorial for newcomers to zend.
minor fixes
implemented feedback by @GeeH
Fixes #1268 - Some examples are not showing in View Helper - URL
Fixes some code examples for navigation tutorial
Fix wrong markup for bold text
Fix headlines for Zend\Barcode
Refactoring Domain from "Album" onto "Blog"; Code only, text rewrites missing
Update zend.permissions.rbac.examples.rst

missing $this in AssertUserIdMatches::assert
Refactoring the object of interest to be `Post` insteadof `Blog` - 50% done
finished update from Blog to Posts for domain object
fixed wrong file paths
removed unneccessary setAttribute(method, post) calls as per feedback provided by @froschdesign
changed inputs to html5 as per @froschdesign, @tfountain, @GeeH