Add r shortcut to reload the current view.
* new share buttons for email and pocket (thanks a lot to Francis Noel)
* replace share icons with black style icons
Merge pull request #145 from c4software/reload_shortcut

Add r shortcut to reload the current view.
update docs
update readme
fix bug in database update for postgresql
fix bug in database update for postgresql
remove text from share buttons
improve formating of share buttons
auto mark as read only on showing items not on collapsing