OpenDicitonaryAPI Support

This change set provide opportunity to work with Slovoed and with a number of other dictionaries through OpenDictionary API [http://dictionary-api.org/api].

I've added new half screen activity to show article from dictionary within app.
Also I've changed method to determine height of  dictionary entry. This method was used to ColorDict. Previous implementation used absolute boundary values. Which appeared on phones with Full HD screen, like SGS4.