#364 Allow to share just the text that is selected

[Davl]

Currently when I select some text, I can either copy it or send it along with the title of the book. Please add an option to share just the text; it can be sent to an app such as https://github.com/balesz/android-WebSearch which makes it easy to lookup web-based dictionaries.

Alternatively, add a new dictionary to the settings, going by the name "Share".