Added image, plane index to getColorTable

The HasColorTable API can now specify the image and plane index of the
desired ColorTable.
Added Parse signature to JPEG2k Parser

As the JPEG2000 format has been replaced by the JPEG2000Format.Parser,
added a parse(RAIS, Metadata, long maxOffset) signature to support the
same functionality as the legacy parser.
Adjusted ByteArrayPlane construction

A byte array is now allocated by using FormatTools.bytesPerPixel for the
pixel type, instead of directly dividing the bits per pixel by 8 (as
there can be bits per pixel that aren't evenly divisible by 8).
Refactored translator naming

The OME translators have now been consolidated to a single class, of the
non-ome name (e.g. "APNGTranslator"). These classes are containers for
one or more nested class that perform the actual translation.
WIP: tiffJAI format
WIP: MinimalTiff
wip: tiffformat
WIP: OMETIFF