BOY: fix issue
https://github.com/ControlSystemStudio/cs-studio/issues/219
o.a.archive.engine: Check for invalid time stamps

This includes a workaround for VType bug where out of range nanoseconds
would be reported as 'valid' yet cause a RuntimeException when fetching
the Timestamp
o.c.scan: Fix simulation config issues

Simulation config is required, but it can be 'empty', meaning: Use the
beamline config file, don't define any slew rates.

When simulation config path is set to empty, it will now default to the
beamline config path.

beamline.xsd now includes the slew_rate.
o.c.archive.engine: Remove 'SHOW_PROGRESS_ON_STARTUP'

IDE had added that
Merge pull request #221 from ControlSystemStudio/bug_209_invalid_timestamp

o.a.archive.engine: Check for invalid time stamps resolves #209
Merge pull request #224 from ControlSystemStudio/bug222_scan_simu_config

Bug222 scan simu config: resolves #222
Merge pull request #226 from ControlSystemStudio/hotfixes

BOY: fix issue: resolves #219
Data Browser: Fix zoom bug

When scrolling, then zooming into 'left' area of plot such that the
scrolling gets disabled because 'end' is no longer close to 'now', the
start/end times were wrong, using start of the zoomed area as the end.
Data Browser: Update changelog, remove debug printouts
Merge pull request #234 from ControlSystemStudio/bug227_zoom_when_scrolling_gets_disabled

Bug227 zoom when scrolling gets disabled: resolves  #227
Merge remote-tracking branch 'origin/master' into
bug228_archive_export_linear_interpol

Conflicts:
	applications/plugins/org.csstudio.archive.rdb/ChangeLog.html
	applications/plugins/org.csstudio.archive.rdb/META-INF/MANIFEST.MF