More minor updates

Some more minor updates to the system:

• Added 'clear' function to Search Entities box which is available to Group and Admin users
• Added Entity Name to top banner for easier navigation for those controlling more than one Entity
• Added Opening Hours fields for Hotel and Restaurant entities
• Wrote functions to display Opening Hours and Reserve Table areas on Sitebuilder sites
• Wrote function to generate Feature Navigation buttons for Sitebuilder for Groups