cleanup guice refactoring
migrate to google-guice
fix initialization of actions through proxy
remove SslSupport as application service
Merge branch 'features/guice'

Conflicts:
	src/main/java/com/urswolfer/intellij/plugin/gerrit/git/GerritGitService.java
	src/main/java/com/urswolfer/intellij/plugin/gerrit/git/GerritGitUtil.java
	src/main/java/com/urswolfer/intellij/plugin/gerrit/ui/GerritChangeListPanel.java
	src/main/java/com/urswolfer/intellij/plugin/gerrit/ui/GerritToolWindowImpl.java