Keep all public assets in a single folder

[indcoder]

Looking at the code we can put all public asset under a single folder so that moving around folders can be accomplished by a single command.

Presently multiple commands have to be executed in the build phase to work with individual folders. This all can reduced to a single mkdir and cp command.

mkdir -p release/$ZIPNAME/fonts
cp fonts/* release/$ZIPNAME/fonts
mkdir -p release/$ZIPNAME/img
cp img/*.jpg release/$ZIPNAME/img/
mkdir -p release/$ZIPNAME/diagrams
cp diagrams/*.svg release/$ZIPNAME/diagrams/
mkdir -p release/$ZIPNAME/js
cp js/* release/$ZIPNAME/js/