add groovy 1.8.6 in feature

 add groovy 1.8.6 in feature
Merge remote-tracking branch 'origin/CoreProduct-6.1.x'
Merge branch 'master' into FT158_AppsTracability
STUDIO-2743
use snapshot versions
New trunk snapshot from ci
Update verison & branding
Update verison & branding
STUDIO-3209
[6.0.4] Groovy script return type is incorrect for widgets and forms
Groovy validator
STUDIO-3263
Form preview doesn't display default value of data when data are
initialized with groovy Script
STUDIO-3097
[6.0.3] throw message event - target task configuration
STUDIO-3271
Fix bendpoints list min size
STUDIO-3254
Fix completion in groovy editor
fix output operation on filewidget
BS-950
Migration 5.x to 6.x of a custom connector overwrite the implementation
without warning
update to 6.1.1-SNAPSHOT
Merge remote-tracking branch 'origin/master' into CoreProduct-6.1.x
Merge remote-tracking branch 'origin/CoreProduct-6.1.x'
BS-951
Erroneous message deploying a process from studio: "A message start
event cannot have correlations"
update pom to use 6.1.1-rc-01