Remove unused credentials from access token request

The "credentiels" parameter isn't used by the resource owner password grant on the server, so this code has been dead for well over a year (I suspect).
Support for using ${randomWord} in URLs in the Maven plugin
Upgraded protobuf to 2.6.1.
Merge branch 'master' of https://github.com/cloudfoundry/cf-java-client
Changed getRecentLogs to use Loggregator HTTP endpoint.
Merge pull request #227 from dsyer/patch-1

Remove unused credentials from access token request
Merge pull request #232 from ryanjbaxter/master

Support for using ${randomWord} in URLs in the Maven plugin
Refactored HttpMessageConverters to put them all in the same package.
Adjusted timestamp of uploaded files to UTC.
Fixed file formatting.
Added the ability to save the application upload file to local disk for debugging and testing purposes.
URL getter javadoc is referencing a wrong property

getUrl javadoc is referencing application name property.
It seems to me to be a copy-paste error.

This patch fixes the issue by referencing URL property in getUrl javadoc.
Merge pull request #234 from sslavic/patch-1

URL getter javadoc is referencing a wrong property
Upgraded tomcat-websocket library to 8.0.15.
Restored sorting of logs in getRecentLogs().
align with source repository