added SVAR React datagrid and Gantt chart

added SVAR React datagrid and Gantt chart to the corresponding sections

removed:
- GigaTables/reactables - latest commit 5 years ago
- chartify - page not found
- react-dazzle - latest commit 7 years ago
- react-sigma - latest commit 4 years ago

Author: olgatash

README.md

@@ -138,11 +138,11 @@ Please review our [contributing guidelines](https://github.com/brillout/awesome-
 
 - [fortune-sheet](https://github.com/ruilisi/fortune-sheet) - An online spreedsheet component that provides out-of-the-box features just like Excel.
 - [AG Grid](https://github.com/ag-grid/ag-grid) - Advanced Data Grid / Data Table supporting Javascript / React / AngularJS / Web Components.
-- [gigatables-react](https://github.com/GigaTables/reactables) - Sorting, pagination/infinite scroll, global/column search, AJAX CRUD, and more.
 - [MUI X Data grid](https://github.com/mui/mui-x) - [demo/docs](https://mui.com/x/react-data-grid/) - Fast and customizable data grid with advanced features for power users and complex use cases.
 - [react-data-grid](https://github.com/adazzle/react-data-grid) - Excel-like grid.
 - [revo-grid](https://github.com/revolist/revogrid) - [demo/docs](https://revolist.github.io/revogrid/) - Powerfull Data Grid for React / AngularJS / Vue / Web Components with advanced customization.
 - [ReactGrid](https://github.com/silevis/reactgrid) - [demo/docs](https://reactgrid.com/docs/) - Add spreadsheet-like behavior to your app
+- [SVAR React DataGrid](https://svar.dev/react/datagrid/) - [demo](https://docs.svar.dev/react/grid/samples/#/base/willow) - [docs](https://docs.svar.dev/react/grid/getting_started/) - React DataGrid with in-cell editing, tree data, context menu, virtual scrolling, etc.
 - [jqwidgets-react-grid](https://www.jqwidgets.com/react/react-grid/) - Filtering, Pagination, Grouping, Export to Excel, PDF, CRUD and more.
 
 ### Table
@@ -264,25 +264,23 @@ _Loaders / spinners / progress bars — Let the user know that something is load
 
 _Display data in charts / graphs / diagrams_
 
-- [chartify](https://github.com/kirillstepkin/chartify) - React.js plugin for building animated draggable and customizable charts.
 - [essential js 2 charts](https://github.com/syncfusion/ej2-react-ui-components/tree/master/components/charts) - Beautiful and interactive charts & graphs for react.
 - [echarts for react](https://github.com/hustcc/echarts-for-react) - Wrapper around beautiful Apache Echarts
 - [jscharting-react](https://github.com/jscharting/jscharting-react) – React chart component offering a complete set of chart types and engaging data visualizations with [JSCharting](https://jscharting.com/).
 - [react-chartist](https://github.com/fraserxu/react-chartist) - React component for Chartist.js.
 - [react-charty](https://github.com/99ff00/react-charty) - [demo](https://99ff00.github.io/react-charty/) - Small but powerful interactive data viz with multiple chart types, animations, zooming, theming.
 - [react-chartjs-2](https://github.com/jerairrest/react-chartjs-2) - Common react charting components using Chart.js 2.0.
 - [react-d3-components](https://github.com/codesuki/react-d3-components) - D3 Components for React.
-- [react-dazzle](https://github.com/Raathigesh/Dazzle) - Dashboards made easy in React JS.
 - [react-google-charts](https://github.com/RakanNimer/react-google-charts) - React-google-charts React component.
 - [react-highcharts](https://github.com/kirjs/react-highcharts) - React-highcharts.
-- [react-sigmajs](https://github.com/dunnock/react-sigma) - Lightweight but powerful library for drawing network graphs built on top of SigmaJS.
 - [react-sparklines](https://github.com/borisyankov/react-sparklines) - Beautiful and expressive Sparklines React component.
 - [react-timeseries-charts](https://github.com/esnet/react-timeseries-charts) - Declarative timeseries charts.
 - [react-vis](https://github.com/uber/react-vis) - Data visualization library based on React and d3.
 - [recharts](https://github.com/recharts/recharts) - Redefined chart library built with React and D3.
 - [rumble-charts](https://github.com/rumble-charts/rumble-charts) - React components for building composable and flexible charts.
 - [victory](https://github.com/FormidableLabs/victory) - Data viz for React.
 - [semiotic](https://semiotic.nteract.io/) - Semiotic is a data visualization framework for React.
+- [SVAR React Gantt](https://svar.dev/react/gantt/) - [demo](https://docs.svar.dev/react/gantt/samples/#/base/willow) - [docs](https://docs.svar.dev/react/gantt/getting_started/) - Customizable, interactive Gantt chart component
 - [DevExtreme React Chart](https://devexpress.github.io/devextreme-reactive/react/chart/) - High-performance plugin-based chart for Bootstrap and Material Design.
 - [Smart React Chart](https://www.htmlelements.com/react/demos/chart/overview/) - Feature complete Charting library.
 - [react-muze](https://github.com/chartshq/react-muze) - React wrapper for [muze](https://muzejs.org/)(free data visualization library for creating exploratory data visualizations in browser, using WebAssembly)