unified readURL
added log4j.properties
added generic URLLoaderRefreshable for blocking URL loads
updated URLLoaderUtil to use URLLoaderRefreshable
made EntityURLLoaderThread generic for JSON usage (and removed
CollectionURLLoaderThread)
renamed readURL(..) to load(..)
added sorting support for SynchronizedList
added EnumRefreshMode.onFirstAccess
added KaroURLs.PARAMETER_LIMIT_UNLIMITED
updated URLLoaderUtil
updated URLLoaderThread
Merge branch 'master' of https://github.com/ultimate/KaroAPI4J

Conflicts:
	src/main/java/ultimate/karoapi4j/utils/URLLoaderUtil.java
fixed URLLoaderUtil