#163: reverted to correct maxExtent

Reverted to correct maxExtent for the EPSG:4326 projection
(-180,-90,180,90)

and DOWNLOAD FUNCTIONALITY BY SR

Signed-off-by: ramayas <suresh.ramayah@environment.nsw.gov.au>
Merge branch 'OEH-2.10.0' of https://github.com/lisasoft/core-geonetwork into OEH-2.10.0

Conflicts:
	web-client/src/main/resources/apps/search/js/map/MapApp.js
	web-client/src/main/resources/apps/tabsearch/js/map/MapApp.js
	web/src/main/webapp/WEB-INF/config-gui.xml
	web/src/main/webapp/scripts/ol_map.js
	web/src/main/webapp/scripts/ol_minimap.js

Signed-off-by: ramayas <suresh.ramayah@environment.nsw.gov.au>