docs(searchbox): add itemselected event article and improve overview

docs(api): add FloatingActionButton server-side API

Added new feature for Type 3 fonts (telerik#415)

docs(api): Update Server-side API for R1 2022

docs(daterangepicker): update server-side api

docs(api): Update Server API for R2 2021 release

docs(chart): fix typos

docs(serverapi): Updated htmlchart server-side api

docs(api): Add Timeline Server-side API

docs(common): Add API from R1 2020 Release assemblies