added some classes and utilities to ease migration from Wicket 1.4

Conflicts:
	src/main/java/at/molindo/wicketutils/utils/WicketUtils.java
- upgraded to latest molindo-utils snapshot
- use URIUtils.resolve(..) instead of RequestUtils.toAbsolutePath(..)
for URL generation
Conflicts:
	src/main/java/at/molindo/wicketutils/utils/WicketUtils.java
deleted JavascriptPackageResource as it causes case-sensitivity issues
Merge branch 'master' into msp-behavior-additions
updated wicket to 6.14.0 and molindo-utils to 1.1.2-SNAPSHOT (in
properties only)