- Parent pom defines java source and target 1.7.
- Update paremt pom to use java 1.7
AIDA-4 #comment problem with closing IndexWriter; use java 1.7 try-with-resources in attempt to fix it.
Merge branch 'aida-4_indexerUnsupportedFiletypes' into deployOn_vocab.maastro.nl

Conflicts:
	Search/Indexer/pom.xml