pull: fix Homebrew Testing pull regression.
pull: fix Homebrew Testing pull regression.

Don't fail if we fail to parse an issue when pulling.

While we're here, do some general code cleanup of stuff that's hard to
follow, named confusingly or duplicated unnecessarily.

konqui/brew,nandub/brew,MikeMcQuaid/brew,konqui/brew,claui/brew,JCount/brew,reitermarkus/brew,mahori/brew,konqui/brew,vitorgalvao/brew,MikeMcQuaid/brew,reitermarkus/brew,JCount/brew,mahori/brew,konqui/brew,EricFromCanada/brew,Homebrew/brew,mahori/brew,vitorgalvao/brew,Homebrew/brew,EricFromCanada/brew,reitermarkus/brew,EricFromCanada/brew,reitermarkus/brew,sjackman/homebrew,nandub/brew,nandub/brew,sjackman/homebrew,Homebrew/brew,MikeMcQuaid/brew,Homebrew/brew,vitorgalvao/brew,sjackman/homebrew,mahori/brew,JCount/brew,nandub/brew,claui/brew,sjackman/homebrew,claui/brew,EricFromCanada/brew,MikeMcQuaid/brew,claui/brew,vitorgalvao/brew,JCount/brew