DS-1823 move dspace.url to build.properties

dspace.url is now independent from baseUrl
add context to  two methods parameters  to have monthly statistics localised
Delete spring-dspace-addon-discovery-configuration-services.xml
DS-1596 fix for Mirage Theme only.
DS-1596 fix for "Reference" theme
DS-1596 fix for "Classic" theme
DS-1596 fix for "Kubrick" theme
Fix DS-1596 for 'template' theme.
DS-1596 fix for "mobile" theme
DS-1906: Adds configurable option to reconvert shibboleth attributes.
DS-1917 JSPUI validity fixes (several non-controversial fixes)
DS-1928 use the oai-identifier schema in <description>
Reconvert shibboleth attribute only if it is neither null nor empty.
DS-1919 Solr Search Empty FilterQuery bug
DS-1947: Remove reference to missing file

The missing file, seems to be an Institution specific file. 

The missing file in question m-tweaks.js
[DS-1805] Maven filtering broken for SOLR artifact.

Enable filtering of dspace-solr's web.xml.
DS-1957 xml workflow script incorrect for oracle
Fix SolrLogger Memory Error
edited for junii2 version 3.1
Simulate a remove event at the site on deletion of a top level community

Fixes DS-1966