title: Jenkins GitHub Organization building master *and* PRs
body: <p>I'd like to set up a Jenkins "GitHub Organization" project. For branch sources, I'd like to pick "Only branches that are also PRs", but I would like to <em>also</em> build one or two white-listed branches. (ie, "master", or "release")</p>
  
  <p>Adding filters cuts down on the list of branches to be built, I want to add some. I could set branch discovery to "All branches", but there's no filter I can specify for also-filed-as-PR, without imposing some branch name convention or something. </p>
  
  <p>So far as I can tell, this means I need to set up two whole Jenkins projects, one with PR discovery, and one with the branch filter for my whitelist. This seems awkward and redundant. Any better ideas?</p>