Doxygen support
Doxygen output directory defined
JavaDoc: com.globo.galeb.consistenthash
JavaDoc updated
JavaDoc and Doxygen updated
Default tcp port (router and manager) changed
Compression support enabled
Merge branch 'develop' into docs

Conflicts:
	src/main/java/com/globo/galeb/core/Backend.java
	src/main/java/com/globo/galeb/core/ConnectionsCounter.java
	src/main/java/com/globo/galeb/core/ServerResponse.java
	src/main/java/com/globo/galeb/handlers/RouterRequestHandler.java
	src/main/java/com/globo/galeb/handlers/RouterResponseHandler.java
	src/main/java/com/globo/galeb/metrics/CounterWithStatsd.java
	src/main/java/com/globo/galeb/verticles/HealthManagerVerticle.java
	src/main/java/com/globo/galeb/verticles/RouterVerticle.java