Document rewrite rules for PaaS solutions

- Added documentation for additional .htaccess lines you may need when
  on some PaaS platforms that use Apache Alias directives (phpcloud,
  OpenShift, others).
Merge pull request #152 from weierophinney/hotfix/htaccess-paas

Document rewrite rules for PaaS solutions
Use alias rule always

- I tested using the new RewriteCond and RewriteRule that were in the comments
  on my previous commit against a non-aliased host - and they work perfectly in
  that environment. As such, this is actually a better solution, as it will work
  in all cases.
- Documented the reasons for the rule in the file.
Merge pull request #153 from weierophinney/hotfix/htaccess-paas

Use alias rule always
Documenting config keys in `config/application.config.php`
Merge pull request #154 from Ocramius/feature/module-dependencies

Documenting config keys in `config/application.config.php`
Update ZF2 submodule to 2.0.4
Update ZF2 submodule to 2.0.5
Update ZF2 submodule to 2.0.6
Update ZF2 submodule to 2.0.7
Update ZF2 submodule to 2.1.0