Configurable title when sharing content

Problem: The shared content title defaults to the site_name variable

The easy_social module sets the share title (ex: when sharing a page through Twitter) to the Drupal site name by default and there is no way to change it. There are cases where the site maintainer may want to adjust it to something else instead, such as the page title, or a combination of different elements.

Proposed Solution:

The attached patch adds an additional admin configuration for each block override that allows setting the share title with content via a text field that is also compatible with tokens.