v1.7.0

• Add megamenu dropdowns.
• Make page content single column.
• Update browse preview to be consistent with the default browse markup pattern.
• Add trigger "view.browse.before" in item browse. (Thanks to @Daniel-KM)
• Clean up component conditionals.
• Only show gallery pager for items with multiple visual media attachments.
• Remove extra space from browse thumbnails.
• Remove unnecessary black links from browse views.
• Make multiple value margin from selects to container in advanced search.
• Fix unescaped browse body.
• Fix escape in browse preview block. (Thanks to @Daniel-KM)
• Restore thumbnail class.
• Fix typo in escapeHtml method name. (Thanks to RIW.)
• Fix unordered list class.
• Create LICENSE.
• Create README.
• Update dependencies.