BZ-1077149: Form modeler can't add boolean fields from custom POJOs, when getter starts with "is"
BZ:1067985 - Literals added for i18n

(cherry picked from commit e4784b687018f853b688d373147b1fc1b5fc47a1)
BZ-1076848: fixed sizing & styling error that was making unable to reach the field properties save buttons.
Merge branch '6.0.x' of https://github.com/droolsjbpm/jbpm-form-modeler into 6.0.x
Some translation corrections
(cherry-picked from 4ef7ab5)
BZ-1059715: fixed field properties window positioning
BZ-1081939: Don't put '+' button in front of basic type fields in "Add Fields By Origin".
upgrade to 6.0.3-SNAPSHOT
Fixed error receiving empty String outputs from jbpm.
Merge branch '6.0.x' of https://github.com/droolsjbpm/jbpm-form-modeler into 6.0.x

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BZ-1081939: Don't put '+' button in front of basic type fields in Add Fields By Origin