HSTTWO-3498 HDC as more extensible to integrate with external APM

HSTTWO-3039 Extend JcrPath annotation to allow linkpicker to refer docs outside the channel's content scope

HSTTWO-3257 move the parameter annotations from hst-api to cms7-commons because they require a shared classloader to be able to scan parameterinfo methods from a HstComponent class from a different webapp than the current

CMS7-7418 INCLUDING version fro lucene and fqcn of lucene

CMS7-7431 add http servlet request utils for common use

CMS7-7418 Add WeakIdentityMap clone from Lucene

HSTTWO-2703 move TransientRole and TransientUser to cms7-commons as they need to be part of shared lib

CMS7-6812: fixed license headers, bumped parent to project 16-SNAPSHOT

CMS7-6586 add security event convenience class

CMS7-6526: support cloning and supply a copy constructor

Cloning is an effective way of supporting more specific event types.
All state that is kept in the bag-of-properties is copied (shallow).
Copied events are no longer sealed.

CMS7-6319: move sso implementation to hippo commons project

CMS7-6191: add timestamp property, initialize it by default using the system time

CMS7-5867: allow builtin keys to be set using the generic 'set' method and use
three-part version numbering

CMS7-5823: event bus api and (guava) implementation