Porting advanced embargo function to JSPUI

Fixed some codes as the code reviews by helix84

reverted the api of BrowseItem to its original

revert build.properties

Porting advanced embargo function to JSPUI, revised version
correct some strings and comments
Export all collections of a community recursively
DS-1235 IP authentication configuration does not apply netmask and CIDR ranges correctly
Ensure all metadata fields are exported through OAI with oai_dc.

Some fields were not exported which can be a problem when harvesting
from another repository.
Don't export dc.description.provenance.

The default is to hide this metadata (see
metadata.hide.dc.description.provenance option in dspace.cfg).
Update metadata.hide.dc.description.provenance option comment.

This option no longer affects OAI-PMH.
DS-1622 Porting of the Login As feature to JSPUI
Migrate solr config files to solr4, add standalone log4j configuration (use log4j daily appender logger) for solr and reference it in web.xml, merge web.xml custom dspace with web.xml solr4 default
Add standalone lucene-queryparser (before went with core), added specific solr.version property, update elasticsearch to avoid references to lib <lucene4
From version 4.3.0 aims for complete logging flexibility, it don't include logging jars in the .war file, so we provide them with the inclusion of commons-logging
Migrate discovery to solr4
Migrate search to lucene 4
Migrate statistics to solr4
Exception surrounded modified in solr4
Update to new solr server object
Update modules to solr4
Update elasticsearch references to new version
Fixing usage statistics logging by adding update chain for uid
Merge pull request #1 from KevinVdV/DS-1623

Fixing usage statistics logging by adding update chain for uid