Aligned GCWU theme with other themes

Did so by merging the application examples with the other examples and stopping the use of target='_blank' (still a valid approach but there are other equally valid approaches as well.

Note that this doesn't break anything. The previous code can still be used (which is pretty much a liberal use of target="_blank" and reduced menus) but this updated code is easier to maintain and keeps this theme in sync with the other themes.