Add support for dietary properties during recipe search

[jayaddison]

Describe the reason for these changes and the problem that they solve

This changeset adds user interface support for queries based on dietary properties (vegetarian meals, gluten-free meals, ...).

Briefly summarize the changes

1. Add a column to the search controls that contains a list of available dietary property filters
2. Include dietary property selection criteria during recipe search queries
3. Update the URL hash used in browser navigation history to include selected dietary property filters

How have the changes been tested?

1. Local development testing

List any issues that this change relates to
Resolves #211.

[jayaddison]

TODO:

• Perform feature internationalization (Add translated resources for dietary property search filtering internationalization#22)
• Nice-to-have: identify "incompatible" ingredients (Identify incompatible ingredient/dietary-property combinations api#108)