Fixes #17972 - Simplify new trend form js and helpers

Migrated the js to webpack as well.

fixes #17600 - Storybook does not draw chart

Fixes #17516 - Update jquery to 2.2.4 to fix XSS

Affected versions of the package (< 1.12) are vulnerable to Cross-site
Scripting (XSS) attacks when a cross-domain ajax request is performed
without the dataType option causing text/javascript responses to be...

Fixes #17627 - remove tooltips after clicking back

Turbolinks will keep the page cached as it is when a link with a tooltip
is clicked, so that clicking back will show the page with the tooltip
still active. This will make sure any tooltips are hidden when a page is...

Fixes #17570 - Only execute `onContentLoad` once per page

When an event is triggered, jQuery attempts to execute the on<name>
method if it exists for event <name>. We were also manually triggering
the `onContentLoad` every time the `ContentLoad` event was triggered,...

fixes #17287 - add storybook support

Fixes #17580 - React Chart Component has unsafe function

Fixes #17571 - Refactor tfm.tools to use ES6 syntax

This also extracts the inherited user roles function to a sepereate
module, adds tests and refactors it. These changes also fix two other
issues:
1. a possible stored XSS in usergroup names,
2. tooltips on tables were broken (due to => syntax not changing `this`)

Fixes #17569 - prevent error on chart component unmount

Fixes #17501 - Display tooltips on dashboard widgets (#4067)