Feature ElasticSearch Index+FileIndex+Search

(new file formats supported : docx, pdf)
refactor DocumentRevision
Feature ElasticSearch Index+FileIndex+Search v0.2

(Boosting Field + BulkIndex+ Uniform Query)
fix revision...
merge mandatory attrs
fix permalink issue
Feature ElasticSearch Index+FileIndex+Search v0.3

(Remove Singleton + Exception)
Merge ElasticSearch Import + Optimize imports
ElasticSearch parameter + Optimize imports
ElasticSearch parameter + Arquillian fix
ElasticSearch parameter option fix + Arquillian fix
Merge Feature-DocumentRevision-and-ESIndex in Dev Branch
DocumentsResource fix
change document version dto, added utf8 support for xhtmls (close #259)
Javascript upload + renamed js vars