av-caster-0.15

housekeeping

  * updated CodeBlocksLinux project
  * updated changelog, version numbers, and READMEs
  * added Builds/Scripts/cppcheck-filtered.sh
  * addresssed some lint issues
  * added AvCaster::SetWindowTitle()
  * removed MainContent::instantiate(), MainContent::setTitle()
  * removed AvCasterApplication param from MainWindow constructor
  * removed MainWindow param from MainContent constructor