update chart lib with many minor fixes and add option to set chart gr…

…id background color

apexplugin.json

@@ -1,6 +1,6 @@
 {
     "name": "APEX Material BI Dashboard",
-    "version": "1.0.0.14",
+    "version": "1.0.0.15",
     "description": "This plug-in allows to integrate a freely configurable dashboard into Oracle APEX.<p>It offers many display options, e.g. charts, lists, KPI cards, world map, tables, HTML, analog clock, calendar and much more. Each dashboard item can be customized, even at runtime without page submit!</p><p>The main advantage of the dashboard is that end-users of your APEX app can configure one or more dashboards at runtime without having to touch the region or page by a developer! This was not possible in APEX so far! Of course, the dashboard can also be used as a fixed region.</p><p>The plug-in requires an APEX 5.1.3 or newer and an Oracle 12c or newer. The Sample App requires an APEX 20.2 or newer. However, you can quickly install it in a free workspace on apex.oracle.com and then get started right away with the help of the Sample App!</p><p>The item dialog in the Sample App is just a very simplified example, of course in your application the respective data source (table, view, function...) and many setting options for the respective dashboard item can be offered there.</p><p><b>The Plug-in is published under CC BY-ND 4.0, so you can use it everywhere even in commercial projects. The only restriction is that the code inside the plug-in must not be changed! This refers only to the plug-in code itself, the sample app and everything that belongs to it (tables, packages, sample data) are licensed under MIT and can be used, adapted and published as you like!</b></p><p>You can find a tutorial at<p>https:\/\/www.youtube.com/playlist?list=PL9daxiSwWyTbIm8fTa0ypeC6dFfMgXALq</p></p>",
     "keywords": ["oracle", "apex", "plugin", "charts", "region", "responsive", "d3"],
     "homepage": "https://github.com/RonnyWeiss/APEX-Material-BI-Dashboard",