Summary of the changes:

* Build: Add jQuery 3.2.0-3.4.1 to versions UI can be tested against
* Build: Load jQuery & Migrate via HTTPS
* Build: Add package-lock.json to .gitignore
* Build: Update jQuery Migrate from 3.0.0 to 3.1.0
* Build: Allow to run tests against jQuery 3.x-git
* Build: Fix formatting according to JSCS rules
* Build: Disable JSCS for the inlined jQuery Color
* All: Switch from $.isArray to Array.isArray (jQuery.isArray will be
  removed in jQuery 4.0)
* All: Switch from `$.isFunction( x )` to `typeof x === "function"`
  (jQuery.isFunction will be removed in jQuery 4.0)
* All: Inline jQuery.isWindow as it'll be removed in jQuery 4.0
* Effects: Fix a timing issue in a variable declaration. Previously,
  a jQuery object was created, chained & assigned to a variable that
  was then accessed in a callback used inside of this chained
  definition. Due to a timing difference in when the callback fired for
  the first time in latest jQuery master, it was being called before
  the variable was defined.
* Tests: Make dialog & draggable unit tests less strict (newest jQuery
  returns fractional results in some cases, making comparisons fail when
  there's a tiny difference)
* All: Migrate from $.trim to bare String.prototype.trim (jQuery.trim
  will be deprecated in jQuery 3.5)

Closes gh-1901

See:
https://github.com/jquery/jquery-migrate/blob/master/warnings.md#jqmigrate-jqueryexprfilters-is-deprecated-use-jqueryexprpseudos

Closes gh-1887

Closes gh-1837

The term for "Today" in Danish is "I dag" not "Idag". This is a common misspelling in the Danish language. 
see https://dsn.dk/?retskriv=idag 
Dansk Sprognævn (DSN) is the authority over the Danish language.

Closes gh-1862

`.disableSelection()` was deprecated in v1.9:
http://api.jqueryui.com/disableSelection/

Closes gh-1856

Closes gh-1905

jQuery positional selectors () have been deprecated in
[jQuery 3.4.0](https://blog.jquery.com/2019/04/10/jquery-3-4-0-released/)
and they'll be removed in jQuery 4.0.0. This PR removes their usage.

Most of the changes were possible without changing public API. However,
dropping `:even` usage required a change to the
[`header` option](https://api.jqueryui.com/accordion/#option-header)
of the accordion widget. I made it an optional function; this will need
to be documented.

The polyfill for `.even()` & `.odd()` is added for jQuery <3.5.0. There was
no usage of the :odd selector in the code but the `.odd()` method is also
polyfilled for completeness.

Closes gh-1904

…racters

The jQuery Simulate & jQuery Color updates are needed for compatibility
with jQuery master, a future jQuery 4.

Closes gh-1914

Closes gh-1915

Closes gh-1916

The file now contains many more than just jQuery 1.7 patches.

Closes gh-1917

This is necessary to catch all possible warnings that the test files
may trigger.

Closes gh-1918

Closes gh-1919

This helps fix issues that make tooltip tests sometimes fail when run against
jQuery 3.2 or newer due to timing differences.

Details:
* Add the `moduleAfterEach` function ensuring no timers are running.
* Attach this function via `common.testWidget`.
* Attach this function to most test suites.
* Add a tooltip test helper cleaning up leftover timers.
* Rename legacy `setup`/`teardown` hooks to `beforeEach`/`afterEach`.

Closes gh-1920

Signed-off-by: sakshi87 <sakshi.sharma@puresoftware.com>