Good questions here. The theme using a social sharing script called Sharrre (http://sharrre.com) to power those buttons. There are quite a few options built into the script.
The theme loads these in a file called post-meta.php. If you’d like to turn on Google+ you can do that by editing that file. You would need to edit these lines:
share: {
facebook: true,
twitter: true,
pinterest: true
},
so that they include Google plus:
share: {
facebook: true,
twitter: true,
pinterest: true,
googlePlus: true
},
I haven’t tested it, but in theory that should work. According to the documentation at http://sharrre.com you can turn off the count bubbles.
I’m pretty sure this script isn’t maintained anymore. The last update was over two years ago so it’s quite possible it doesn’t play as nicely with Pinterest’s share buttons as it should.
If I can help out, let me know,
Bill