* Closes#2937
Added required dependency to run make test in developer's guide
* Fixed base URL appending when chart address is not absolute
* Removed requirement from developers.md
* Fixed unnecessary line breaks
* Added tests for query string repo
* Returning URL along with error
When a repository is generated without --url, the packages in that
repository do not have FQDNs. In this case, the URL prefix (FQDN plus
base path) should be derived from the repository's base URL. This seems
to be a regression that crept in around Helm 2.2.0. This is now fixed.
Closes#2315Closes#2510