Continue work about fixing the POMs (new artifactId, renames, etc).

pom.xml

xwiki-platform-action/pom.xml

xwiki-platform-activitystream/pom.xml

xwiki-platform-administration/pom.xml

xwiki-platform-adwords/pom.xml

xwiki-platform-albatross/pom.xml

xwiki-platform-alexa/pom.xml

xwiki-platform-annotations/pom.xml

...atform-annotations/xwiki-platform-annotation-core/pom.xml

...n-core/src/main/java/org/xwiki/annotation/Annotation.java

...src/main/java/org/xwiki/annotation/AnnotationService.java

...java/org/xwiki/annotation/AnnotationServiceException.java

...ain/java/org/xwiki/annotation/content/AlteredContent.java

...ain/java/org/xwiki/annotation/content/ContentAlterer.java

...main/java/org/xwiki/annotation/content/filter/Filter.java

...a/org/xwiki/annotation/event/AbstractAnnotationEvent.java

...java/org/xwiki/annotation/event/AnnotationAddedEvent.java

...va/org/xwiki/annotation/event/AnnotationDeletedEvent.java

...va/org/xwiki/annotation/event/AnnotationUpdatedEvent.java

...g/xwiki/annotation/internal/DefaultAnnotationService.java