spinner now in fraction-common repository
refactor fractionControl spinner
added maximum spinner, added top shape choice
small visual changes
alpha Version of Beaker added
alpha version of Cake added
number line alpha added
first version of vertical-bar-set-controller
fraction spinner now works correctly
bucket, replace double quotes for single quotes
bucket added
Merge branch 'master' of https://github.com/phetsims/fractions-intro

Conflicts:
	js/fractions-intro-main.js
missed files added