Cleanup and refactor all files

All the files need cleaning, refactoring, and need to match the NCCA coding standard. Also remove any std::couts or qDebug() lines.

[x] button.h, button.cpp @jlyddon
[x] CebErrors.h, CebErrors.cpp @jfdesigner
[x] Cebitor.h, Cebitor.cpp @philrouse
[ ] io_xml.h, io_xml.cpp @EllieAnsell
[ ] json.h, json.cpp @EllieAnsell (Pretty much done, just remove comments I believe)
[x] MainWindow.h, MainWindow.cpp @anandhotwani (Pretty much done, I've cleaned it up)
[x] NewProjectWizard.h, NewProjectWizard.cpp @jfdesigner
[x] NGLScene.h, NGLScene.cpp @anandhotwani
[x] main.cpp @anandhotwani
[x] ParserLib.h, ParserLib.h @yadang23 (Pretty much done, remove couts)
[ ] project.h, project.cpp @mainConfetti
[x] QsciLexerGlsl.h, QsciLexerGlsl.cpp @philrouse (Looks all done but do a once over)
[ ] shadermanager.h, shadermanager.cpp @mainConfetti
[x] StartupDialog.h, StartupDialog.cpp @jfdesigner
[x] UniformData.h, UniformData.cpp @yadang23

NCCA / ShaderEnvironmentBuilder