Fixing handling of query parameter without value

Issue#70 https://github.com/EiffelWebFramework/EWF/issues/70
Added Community section to the README.md file
README.md: Remove dot in the community section
forget about older version of Eiffel cURL
Added PATCH support in http_client, and provided custom_with_upload_data and custom_with_upload_file.
Merge branch 'master' of github.com:EiffelWebFramework/EWF
Merge branch 'master' of https://github.com/EiffelWebFramework/EWF
Added autotests to http library in relation with mime type and content type.
Fixed an issue with more than one parameter.
Merge branch 'master' of https://github.com/EiffelWebFramework/EWF
Fixed type having a semicolon in a parameter value such as
  "text/plain; param1=%"something;foo=bar%"; param2=%"another-thing%"
Merge branch 'master' of https://github.com/EiffelWebFramework/EWF