New features

This release adds office hours checking to the validation form, and fixes a notice on the availability tab.

Convert buttons to links

• #2960781: Add tests for Drupal 8 field
• #2960890: Display message on install that directs the user to read the help page

New Features :

- Access the analysis only with webform nodes
- Issue #2935486: Make the chart as a block

Bug fixes :

- Issue #2950710: Statistics on the results on form submission on a node ?
- Issue #2952313: The analysis is not updated after submitting new data
- Issue #2951452: Wrong order of numeric value in column chart
- Issue #2939566: Doesn't work with multipage (wizard) webform
- Issue #2959865: Not visible nested rows by webform_layout_container

Added confirmation messages.
Fixed issue with Entity Reference single select field.