erp5_officejs_ooffice: splited to 4 bt5

erp5_officejs_ooffice - web_sites and gadget files

erp5_officejs_onlyoffice_webapps_main -- imported from https://lab.nexedi.com/bk/web-apps

erp5_officejs_onlyoffice_sdkjs -- imported from https://lab.nexedi.com/bk/sdkjs

erp5_officejs_onlyoffice_fonts -- imported from https://lab.nexedi.com/bk/erp5_officejs_onlyoffice_fonts

Use web_site_module/ooffice_onlyoffice_gadget union instead web_site_module/ooffice_text_gadget, web_site_module/ooffice_spreadsheet_gadget, web_site_module/ooffice_presentation_gadget

import new version onlyoffice

Hello @vincentB, can you review?