Removed examples folder

The examples are unnecessary. All SCIFIO demonstrative code belongs in
the scifio-tutorials component.
fix: added getFormatFromFormatName to FormatService
fix: added initializeWriter(Metadata, String) to InitializeService
fix: added scijava and imglib2 to loci-legacy ant cp
fix: updated loci-plugins cp with scijava
fix: specified ReaderFilter#castToTypedPlane type
fix: corrected scifio and loci-legacy ant classpath
fix: added eventbus-1.4.jar

Needed for scijava-common EventService.
WIP: updated scijava-common jar to fix npe

Added a custom scijava-common jar that fixes an NPE when checking
versions from the pom.

Not sure why the npe is thrown at all as the meta-inf looked good, but
this will be fixed before a release of scijava-common is cut.

This jar should be replaced with a release jar eventually.
fix: moved tutorials to ome.scifio package
fix: renamed tutorials to imply ordering
wip: converting scifio services to use priority/params
fix: added null checks to PluginAttributeService
fix: Annotated OMEXMLServiceImpl for discovery
fix: format is now set when creating translators
fix: improved separateDefault flag handling in APNG
fix: Delete old sample image if present in T1c
wip: removing format/context from constructors
fix: added findZCTcoords signature

added a signature that accepts a DatasetMetadata so proper
effectivesizec calculations can be made.
WIP: restructured format and translator discovery

Translators are now discovered independently via a TranslatorService.
There is no longer a mapping between formats and translators, because
the relationship is many to many (e.g. if someone created an APNGtoICS
translator it would have no defined format).