include lock files of bower to be able to use "bower install"

bower.json

core/vendor/.gitignore

core/vendor/blueimp-md5/.bower.json

core/vendor/handlebars/.bower.json

core/vendor/jcrop/.bower.json

core/vendor/jquery/.bower.json

core/vendor/moment/.bower.json

core/vendor/select2/.bower.json

core/vendor/snapjs/.bower.json

core/vendor/strengthify/.bower.json

core/vendor/underscore/.bower.json

core/vendor/zxcvbn/.bower.json