Merge pull request #228 from quintonm/master

p6spy-227: log module can not be disabled at runtime
fixed classloader issue with wildlfy 8.1.CR1
enabling Wrapper support for the proxied DataSources (Glasfish 3.1.2.2/4.0 compatibility)
ignoring failing test to enable snapshot releases
respective release notes updates
added misc jboss + wildfly + glassfish instructions
generics added
generics added
organized imports
module removal (on reload) support introduced; partial solution for #227
module removal (on reload) support introduced; partial solution for #227
using Categories (enum) instead of plaintext
generics fixes
updated docs with #227 related stuff
non-verbose javadocs generating
liquibase output not logged (to make travis-ci happy about console logs
size)
split dependencies and plugin-dependencies resolution, to bypass travis
10min no-output build termination
using interface as field type rather than concrete implementation
introducing oraclejdk8 for travis
fixing testAppenderReconfigurationTakesPlaceImediatelly