Allow users to rate the recipe

[Moc]

Motivation

Users may want to vote on recipes when they find them valuable. This way other users can see which recipes are most liked by other people.

Proposed Solution

• Functionality that allows users to rate specific recipes (stars?)
• Admin can choose which userclass can rate recipes
• Show average rating (# of stars?) and amount of people who have votes
• Order by rating

Additional Context

Just a note; currently the 'rating' was designed for the recipe author to submit their own rating to a recipe. In the future, this will be changed to difficulty level (see #5) and the rating will be re-designed to be a 'user rating' as explained above.

[Moc]

Rating functionality in core is buggy. Needs testing and possible fixing. "Future" milestone for now.