upload issue resolving
Implemented test functional for upload file. Should be refactored
ANNOTATIONJAVA-182: Import functional is not work in Dropwizard sample (problem with file upload)
configuration description updated
Merge remote-tracking branch 'remotes/origin/v1.5.0-upload' into v1.5.0

Conflicts:
	configuration.yml
	src/main/java/com/groupdocs/annotation/config/ApplicationConfiguration.java
	src/main/java/com/groupdocs/annotation/resources/AnnotationResource.java
	src/main/resources/com/groupdocs/annotation/views/annotation.ftl
ANNOTATIONJAVA-268: Merge Dropwizard sample from branch v1.5.0-upload to branch v1.5.0
Fixed merge bugs