Overall cleaned up the GUI code by moving any code dealing with a specific panel into that panel's file. MainFrame is no longer doing the work of SimpleMode and SimpleMode is no longer doing the work of AddNewClass. Also, when adding a class, it now saves an XML file with the course information so that it will exist the next time the program is started. The table needs to be updated when a class is added still. Should refresh the table (redo the preload) after a course is added.
Merge pull request #66 from GarbageElitist/fixing_addClass

Overall cleaned up the GUI code by moving any code dealing with a specif...
fixing 4 bugs, one for simple mode buttons. three for removing courses menu
Merge pull request #67 from LilongHuang/lilongBranch

fixing 4 bugs, one for simple mode buttons. three for removing courses menu
Merge pull request #9 from spockNinja/master

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