Improve project description / terminology

This module requires a greater eye toward existing vocabularies - notably, it uses the term "label" almost entirely incorrectly.

A "label" is the name or category of a "value". "Title" might be a label name, and a "Alice in Wonderland" is the value.

"Automatic Entity Label" should be called "Automatic Entity Value".

"a small and efficient module that allows hiding of entity label fields" is incorrect, because there's no such thing as a "label field" - it's a "field label". "To prevent empty labels it can be configured to generate the label automatically by a given pattern." is also incorrect - a Label is *never* empty. The correct term is "value". Et cetera, et cetera. Spent an hour today tracking down a bug because I *ignored* this module entirely since I erroneously believed it worked on labels only, and not field values.

(The above examples are just rife in the module's description - the end-user strings in the module itself are also problematic.)