Remove the over-design about methodMatcher, use byte-buddy judge instead. Add module ‘skywalking-toolkit-opentracing-activation’ ( no activation implementation ).

use ‘%T’ instead of ‘%x’, to avoid log4j NDC failure. https://github.com/wu-sheng/sky-walking/issues/77

* 'master' of https://github.com/wu-sheng/sky-walking:
  Set theme jekyll-theme-tactile

# Conflicts:
#	skywalking-sniffer/skywalking-agent/dependency-reduced-pom.xml

Add a new a characteristic