Replace Dagger with Guice 4.0 beta and update Guava to 16.0.1

James Moger

2014-05-16 aa1361d04cfe09f90e7d8bece90c00dd6e4185bb

src/main/java/com/gitblit/dagger/DaggerServlet.java does not exist in tree c394b3d49e0974afb1e13bcea859cb29e038f8b3