Move Chart Documentation to NativeScript website

[tsonevn]

From @razorsyntax on November 8, 2018 20:8

Is your feature request related to a problem? Please describe.
It's disconcerting that looking up information on the Nativescript charts directs you to the Telerik documentation website. The look and feel of the of this site makes it appear the charts are "less supported" than those found on the main Nativescript website. Finally, there's no explanation as to why the Progress Nativescript UI has its own website.

Describe the solution you'd like
Solution 1) Move the Nativescript Charts documentation to the Nativescript website directly like any other Nativescript related widget.

Solution 2) Modify the Progress Nativescript UI website styling to look identical to that of the Nativescript docs website.

Additional context
Here's a screenshot of the Progress Nativescript UI website where you find documentation for the charts:

Here's a screenshot of the Nativescript Docs website where you find documentation for everything else:

These are vastly different and should not diverge in style.

Copied from original issue: NativeScript/NativeScript#6530

[NickIliev]

Closing as the UI documentation is now part of the main NativeScript docs site.