Removed all the_content filter in favor to wpautop() and do_shortcode()

I had problem with customers using social share plugins.
The icons were added in e-mails and other places they should not.

The best thing to use in place is [wpautop](http://codex.wordpress.org/Function_Reference/wpautop).

To maintain a possible compatibility with someone who was using shortcodes I added also [do_shortcode](http://codex.wordpress.org/Function_Reference/do_shortcode) function also.

Ref: http://kovshenin.com/2011/the-content-filter/