Merge pull request #68 from sotty/master

Add method to KieHelper to check for compilation errors
BPMSPL-70 - move of interfaces
BPMSPL-70 - added support for paging and sorting capabilities for services
 - fixing javadoc errors for Java8
Merge remote-tracking branch 'sotty/master'
 - update to installer docs for WildFly
add backward chaining example docs
Dashbuilder doc: how to embed kpis into third-party apps
[DROOLS-565] Retrieve the rule that caused a RuleRuntimeEvent