Added counter bubble orientation in Basic Toolbox display type.
Fixed getDisplayTypes() to work with blocks. Also provide default settings always.
Add t() to description of Google Analytics elements in config page.

Removed legacy display types.
  AddThis module contained some small non generic display types. They where
  removed in favor of the display types added in the addthis_displays submodule.

Redesigned the config page.
  The settings page has been made more condensed and options have been merged
  into clear categories. There are some options that where removed because of
  legacy functionality that is now support inside the display types.

There was a bug introduced when adding the different displays through formatters
this bug was not noticed but reported by vasike in issue #1308970.

The Basic Toolbox display is now working in a raw form. It should be
polished by the community.

This hook makes sure we add a value to the addthis field when there is no
value. We need this value to make sure we are able to render something.

The markup is now create through a seperate hook function. This is more
dynamic and creates the possiblity to add the theme function better.

Todo: we need to test settings for a formatter and add a field instance to
the block. Settings need to be generic and also be able to be set on the
theme function.

Committing contributed code by Matthias Glastra: Mostly coding conventions related modifications and renaming to prevent possible name collisions.

- Using field formatters to select the sharing widget type in the UI (contributed by Matthias Glastra, matglas86, http://drupal.org/user/573464)

- Decided not to use instance level settings as having one type of sharing widget per entity instance type is more logical in most cases
  - There might be some special cases where you actually need to have a different type of widget for entities of the same type, but currently we try to keep this as simple as possible

Removed hook_field_instance_settings_form, as we do not want to add anything extra to the instance settings form.

Refactoring: Moved field hooks and block hooks to separate include files. Created a subfolder for all include files.