* Makes network eslint compliant
Unused variables in private functions, who were never called internally with those arguments were removed.
lint rule was disabled for public functions, and in private functions which were called internally with those unused arguments

* Disables linting for unused args passed into DataSet and DataView

* Replaces instanceof Object checks with typeof to prevent cross tab issues.

* Adds missing space.

* fix(graph2d): fix #2500 for graph2d; improves #2580

* fix(DataSet): make sure the right id-type is used internaly

This fixes a fixed strange string-number conversion issue.
It can happen that id "0" !== 0 what causes #2580.

fixes #2580

* Important performance enhancement supporting incremental changes to large graphs, these were too slow due to doing a full item conversion on each add().
Note: the data handling side of graph2d is currently somewhat over-engineered (=too complex) It can use some simplification....

* Fixed style based on feedback.

* Updates all 'remove' events in DataSet and DataView to include the objects that were removed in addition to the the ids.
* Updated the documentation to reflect changes.
* Fixed possible object mutation when typeof id is object in DataSet.remove.

- Dropped support for appending data returned by `DataSet.get()` to an existing Array or DataTable.
- Fixed a `window` issue in uuid.js.

Added functionality to extend the fields array, to a fields object,
similar to the type declaration. This makes it possible rename
properies when you get them.