adding DisplayPanel class
adding EntityRecogniserTask class and fleshing out DisplayPanel
contentPane now set to opaque
GraphicalUserInterface now uses DisplayPanel
tidying and refactoring
tidying
renaming ClueSolver.getSolutions() as getCandidateSolutions()
Solution text now always wrapped in Solution objects
tidying
adding rudimentary user input to GUI
EntityRecogniserTask now reports progress of ER
changing appearance of progress bar
tidying