Removing spaces from process input identifiers.

Following 3f286a027062b0eaa86fb48784f3552f7dadecc6, this removes all other occurrences of process inputs with spaces in their names.  The gt-process-feature and gt-process-geometry tests still pass with this change (not surprising, since they don't make use of input names).
GEOT-4256
GEOT-4258 envelope returned by MemoryDataStore getBounds has no coordinate reference system set
GEOT-4259 Under some conditions all attributes are unnecessarily read from dbf file
ensuring git revision picked up by VERSION.txt
fixing issue with raccessing version property from rst files, added branch to denote the current branch, 8, 9, etc...
adding rst_epilog defining branch substituation
added testcases for GEOT-4258
GEOT-4246 Upgrade ImageIO-Ext dependency to 1.1.5
Merge branch '8.x' of https://github.com/geotools/geotools into upstream_8.x
Merge pull request #26 from sgraca/GEOT-4258

GEOT-4258 - better crs handling for MemoryDataStore getBounds()
GEOT-4257 getBounds in MemoryDataStore throws NPE when store contains features with null geometries
moved getBounds tests to MemoryDataStoreBoundsTest
GEOT-4270 Made MouseDragBox constructor and methods public
[GEOT-4264] Introduce SortBy Clause on ImageMosaicReader

Conflicts:

	modules/plugin/imagemosaic/src/main/java/org/geotools/gce/imagemosaic/RasterLayerResponse.java
	modules/plugin/imagemosaic/src/test/java/org/geotools/gce/imagemosaic/ImageMosaicReaderTest.java
[GEOT-4264] Introduce SortBy Clause on ImageMosaicReader

Conflicts:

	modules/plugin/imagemosaic/src/main/java/org/geotools/gce/imagemosaic/RasterLayerResponse.java
	modules/plugin/imagemosaic/src/test/java/org/geotools/gce/imagemosaic/ImageMosaicReaderTest.java
Merge pull request #34 from geosolutions-it/8.x-GEOT-4264-ImageMosaicReader-SortBy-Clause

8.x geot 4264 image mosaic reader sort by clause
GEOT-4271 Create new arrow shape suitable for winds and currents
Merge branch '8.x' into postgis-xdate-udt-8.x
[GEOT-4275] Heatmap RT does not clip input points correctly