WICKET-5677: add onAddToPage lifecycle event
WICKET-5676 Double click causes internal error using AjaxFallbackDefaultDataTable

Use the default channel name for Ajax navigation links
Improve comments, logs and variable names. No functional changes
WICKET-5676 Double click causes internal error using AjaxFallbackDefaultDataTable

Revert the usage of AjaxChannel.ACTIVE for Ajax navigation links

(cherry picked from commit b3e4cb047d4ebe1fe7c1a1682adb240d85ed3a2b)
WICKET-5679 RenderStrategy REDIRECT_TO_RENDER lets fail test with BaseWicketTester#startComponentInPage
WICKET-5654 DefaultViolationTranslator should maybe use getMessage()
WICKET-5680 no need to serialize form element explicitly, wicket-ajax
does it already
WICKET-5680 clear input on cancel
Merge remote-tracking branch 'github/WICKET-5677' into WICKET-5677

Conflicts:
	wicket-core/src/main/java/org/apache/wicket/Component.java
	wicket-core/src/main/java/org/apache/wicket/MarkupContainer.java
WICKET-5656 PropertyResolver does not scan for NotNull in annotation
tree
Removed diamond operator
Fix for problematic uploads to Apache Nexus
Added changelog
add re_added flag
Merge branch 'wicket-6.x' into WICKET-5677