webform 7.x-4.16

Change record: In this release, more functions now return render arrays.

7.x-4.16-rc1 with minor coding standards changes released as 7.x-4.16. Changes since 7.x-4.15:

• Coding standards
• #2816303 by ilari.stenroth, Liam Morland, vinmassaro: Make file upload destination private files by default if available
• #2901156 by dhruveshdtripathi, raynimmo: Fix undefined index: #id in theme_webform_element()
• #2900109 by lambic: Undefined function webform_component_feature() when entitycache is enabled
• #2713743 by joelstein: Add @placeholder support to Number component
• #2604830 by heykarthikwithu, joelpittet: Code cleanup: Remove unused variables throughout the module
• #2883514: Coding standards
• #2873783: Disable form controls when hiding them
• #2869746 by torotil: Return render arrays instead of strings
• #2780283 by nightwalkr, Liam Morland: Fix undefined index in webform_component_include()
• #2866630 by alexp999, Liam Morland: PHP Zip requirement should be Info, not Warning
• #2683801 by nicrodgers, joel_osc: Translation of progress bar page breaks
• #2857854 by pifagor, Liam Morland: Fix non-numeric value warning in PHP 7.1
• #2860487 by mercepedraza: Set numeric values as "general" in Excel export
• #2867012 by Munavijayalakshmi: Fix documentation spelling errors