new stub class for focus functionality
modified gui constants to move generate button to the right
added focus requirement buttons and corresponding constants fixed to accodmate it
modified application to now use a "focus" arraylist for keeping track which focus requirements have been toggled
added support for Focus/GEN listing on table
implemented checkbox list for focus requirements
finished basic focus requirements, needs listeners + filter algorithms
implemented checkbox listeners
fixed issue with "NULL" showing up in Focus requirements (GUI level change), might be better to change in class scheduler
includes felix's changes to parser class
updated gitignore to not ignore database file changes, includes 2015 data
Merge branch 'master' into alt1