Update contents in section Download CONNECT of new wiki

Review each section on wiki https://connectopensource.atlassian.net/wiki/x/CgD4K for correctness. Update contents when needed. Upload 5.0 and onward binaries(as attachments) to the wiki pages.

CC:
Each section should have appropriate documentation.

Upload commontype/webservice/CONNECT source code and binary (as attachment) to the wiki page (starting 5.0 and onward).

Write overview for commontype/webservice and CONNECT.

QA:
Download CONNECT section reviewed.