Changes

tsk8 Adds a view to read a story
Adds the jsf view and css file for the story view Adds author attribute
with getter and setter to story class Modifies StoryManagedBean adding
an attribute to select a story to read and a function to redirect to the
story view Modifies db scripts (creation, data and full) adding author
attribute Modifies welcome page to add a redirect button to story
details view Updates all story tests (both test classes and datasets) 
Authors: Pablo, Manuel and David