history : groovy 2.1.9 not 2.1.19
Merge branch '1.3.x'
Merge branch '1.3.x'
Merge branch '1.3.x'
Merge branch '1.3.x'
Merge branch '1.3.x'
Merge branch '1.3.x'
fix some deprecation warnings in test code
1. Re-implementation of Lynn C. Rees' pull
request (https://github.com/freeplane/freeplane/pull/20):

 - Always add <freeplaneuserdir>/lib and all jars therein to all
   script's classpath.

 - Add-ons have a new 'lib' node which may contain jars or class
   files (not nested).

 - Lib files are installed with the add-on.

2. Additions and changes compared to the initial pull request:

 - Install add-on scripts to a new "private add-on directory"
   <freeplaneuserdir>/addons/<addonname>/scripts

 - Install add-on libs to <freeplaneuserdir>/addons/<addonname>/lib

 - Omitted other non-related changes, especially the fix for the
   'deinstall' spelling error

 - Enhanced the add-on related 'devtools' scripts, especially to
   support the new add-on lib: Better checks, more automation.

Possible enhancement: The add-on libs are added to the global
script classpath, not only to the classpath of the scripts to
which the libs belong to.
Merge branch '1.3.x'
Merge remote-tracking branch 'origin/master' into 1.3.x
Merge remote-tracking branch 'origin/1.3.x' into 1.3.x