Use geometry parameter in search for bounding boxes, instead of actual lucene bbox fields

[josegar74]

Actual search for bounding box adds 1 degree to the bbox for encloses and equal operators.

For small bounding boxes 1 degree is not acceptable as will cover a much bigger region, returning more results than expected.

Change search feature to use geometry parameter (using the spatial index) instead of actual lucene bbox fields. This feature has been implemented in BlueNetMEST sandbox.

[josegar74]

Patch also fixing spatial searches for Disjoint filters

[josegar74]

Added patch created from 2.6.X branch.

[fxp]

+1 for me.

Only the copyright is missing in IsFullyOutsideOfFilter.java

[mcoudert]

+1 from me also, just two comments below for best practices ;)

• Avoid the use of * in imports (i.e import org.fao.geonet.kernel.search.spatial.*)
• Remove commented/unused code from js files (i.e urlizebb)