Added more extensive unit tests.
Fixed a few bugs discovered by unit testing.
Bugfix: in some situations history samples can have later timestamps than live samples (e.g. when PV is disconnected or updating really slowly). This may result in the trend line being plotted back in time.
Bugfix: The regular expression was updated to include the grouping separator (,) and parsing of number has been updated to properly parse numbers in format 432,432.443.
Implemented loading of min, max and count values.
Load min and max values if they are present.
Added the statistical property description to help.
Merge remote-tracking branch 'upstream/master'
Another attempt at fighting the "Einstein bug".
o.c.swt.widgets: Allow resources from web links with spaces

BOY Images (and *.opi files in general) didn't load if the URL contained
spaces. Need "%20" for that, but at the same time must keep the space
when loading the file locally from file system.
Merge remote-tracking branch 'origin/master' into sns
Merge remote-tracking branch 'origin/master' into sns

Conflicts:
	applications/plugins/org.csstudio.swt.widgets/src/org/csstudio/swt/widgets/util/ResourceUtil.java
Merge pull request #396 from jbobnar/master

Archiver Appliance Updates & DataBrowser Import/Export
o.c.utility.caSnooperUI:caSnooper stop snopping when closing the view in CSS by adding  dispose listener #386
o.c.archive.reader.rdb: Add preference for fetch_size

Original hard-coded value could result in out-of-memory error
o.c.archive.reader.rdb: Add preference for fetch_size

Original hard-coded value could result in out-of-memory error
Merge remote-tracking branch 'origin/master' into sns
Merge pull request #408 from ControlSystemStudio/bug407

o.c.archive.reader.rdb: Add preference for fetch_size
o.c.opibuilder: Update online help example for `ColorFontUtil`
o.c.opibuilder: Update online help example for `ColorFontUtil`
Merge pull request #409 from ControlSystemStudio/bug406

o.c.opibuilder: Update online help example for `ColorFontUtil`: fixes #406