and do some refactorings

* add port to pods
* remove url from person and link people with pod-table

These are some initial tests, more to come.

It tests some features of Request, StatusMessage, Comment, Like,
Participation, Retraction, SignedRetraction, RelayableRetraction entities
receive process.

closes #6310

remove old webfinger/hcard generation code

this fixes #5143

This adds a new boolean field "public_details" to person model.
By default it is false and represents old behaviour. When it is
set to true, extended profile (bio,location,gender,birthday)
get available to people who didn't log into diaspora and to
people you don't share with (i.e. it is made public).

In UI, a bootstrap-switch added on the profile-edit page in order to
change the setting.

This also changes wording from public/private profile to basic/extended.
The latter could be public and limited.

remove old webfinger/hcard generation code

this fixes #5143

closes #6168

prepare for federation refactoring

closes #6041

* Get rid of early pathname requirement
* Use require_relative where approciate
* Drop unused files
* Imported new application.rb, environment.rb and environments/* from fresh Rails app
* Cleaned up boot.rb
* Load config in boot.rb
* Deduplicate environments/integration*.rb
* Move username blacklist into defaults.yml
* Ruby 1.9 Hash syntax everywhere
* Reorganize lib/diaspora/markdownify to match conventions
* Get rid of full path requires where possible
* Add dummy content to production section diaspora.yml.example to prevent warning
* Drop sqlite? method
* Move postgres? method into ConfigurationMethods
* Drop token authentication from User

* Rename and reorganize post fetcher to fix autoloading, also let it use
  Faradays default connection so we get nice redirects
* Add initializer to load libs at a central place
* added lib dir to autoload_once paths to increase thread safety
* Moved lib/exceptions.rb to lib/diaspora/ to conform namespacing

Rails 3.2.6 doesn't like them

- `Rails.root` is a `Pathname`, so let's use `Rails.root.join`
- Clean up most of the remaining `File.join`s

also now add a beta role

thanks @mperham! see: http://t.co/Jyt7vV4I

add acts_as_api to the models directly for now.  the 'root node' problem (posts : {}) breaks backbone.  wip