feat(wants) take a stab at price range config for wants
feat(wants): prepare for merge request -- show the wants-price toggle

1- adjust default max price to $10
2- modify <li:wants-widget> to have relevant attributes
3- modify syndicate.js code to process these attributes as href query params on iFrame
4- adjust slider accordingly
5- use the values from href query params -- not the persistent storage for product
merge from develop before PR for NOW-288
test(wants) adjust test for product without price
chore(wants): dissociate widget attributes from product model (per
review comments)
fix(wants): respond to code review comments

1- provide number as the type of input fields, remove spinners via css
2- remove default values and provide placeholders instead
3- favor disable/enable over animate
Merge branch 'develop' into feature/NOW-288
Merge pull request #55 from lithiumtech/feature/NOW-288

Feature/now 288