File crawler bugs and improvement
Conflicts:
	pom.xml
	src/main/java/com/jaeksoft/searchlib/filter/FilterCacheKey.java
	src/main/java/com/jaeksoft/searchlib/filter/FilterListCacheKey.java
	src/main/java/com/jaeksoft/searchlib/index/DocSetHitCacheKey.java
	src/main/java/com/jaeksoft/searchlib/index/osse/OsseUtils.java
	src/main/java/com/jaeksoft/searchlib/sort/SortField.java
Fix bugs in imageParser and FileSystemParser
File crawler UI improvement
Merge pull request #88 from emmanuel-keller/master

File crawler, ImageParser, FileSystemParser