GRAILS-11421 - prettyPrint stack trace exceptions if the stack trace is empty for any reason
Cleanup spacing
Merge pull request #508 from longwa/GRAILS-11421

GRAILS-11421 - prettyPrint stack trace throws exception if stackTrace is empty
Merge remote-tracking branch 'origin/2.3.x' into 2.3.x
GRAILS-11492 - introduce currency converter
Merge branch '2.3.x' into 2.4.x

Conflicts:
	grails-plugin-databinding/src/main/groovy/org/codehaus/groovy/grails/plugins/databinding/DataBindingGrailsPlugin.groovy