Upgrade Handsontable to latest version (v4.0.0)

[budnix]

Context

Upgrade hot-table component to support the latest Handsontable version. Changes are strongly inspired by @warpech (https://github.com/handsontable/hot-table/tree/upgrade-hot) with small changes and bug fixes found after upgrading to the latest version of Handsontable.

The PR is related with https://github.com/handsontable/hot-table/issues/51.

How has this been tested?

After changes the minimal supported version of Handsontable is v2.0.0.

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature or improvement (non-breaking change which adds functionality)
• [x] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Additional language file or change to the existing one (translations)

Checklist:

• [x] My code follows the code style of this project,
• [x] My change requires a change to the documentation.