Update README and Documentation (#1875)

* Added Overview page

* Revised Getting Started page

* Minor revision

* Edited readme, minor modifications to docs

* Removed sweep.yaml, .devcontainer, .ergomake

* Moved security.md to .github, added contributing.md

* changes as per code review

docs/docusaurus.config.js

@@ -42,7 +42,7 @@ const config = {
           sidebarPath: require.resolve('./sidebars.js'),
           sidebarCollapsible: false,
           routeBasePath: '/',
-          editUrl: 'https://github.com/twentyhq/twenty/edit/main/docs/docs/',
+          editUrl: 'https://github.com/twentyhq/twenty/edit/main/docs/',
         },
         blog: false,
         theme: {