Move configuration code into common project.
Move logging servlet filter code to common project.
Set RequestScoped to TestScope.EAGER_SINGLETON for tests.
Move LoggingFilter into common project.
Clean up warnings in LoggingFilterTest.
Remove use of StandardCharsets as it is Java 7 and up.
Move copied dynamic filtering code into candlepin-common
Merge pull request #643 from candlepin/awood/commonize

Move common code (like the logging filter) into the "common" project.