Delegate non-Java code page to LOCI site

The article is a general one, and largely unspecific to Bio-Formats.
The most important Bio-Formats-specific point is the "recommended
solutions" linked at the top.
Simplify note about additional optional libraries

It is unnecessary repetition to mention that "beyond XYZ no additional
libraries are required" since they were just described the sentence
before. That language was really just a holdover from back before there
were any dependencies at all.
Remove language about Bio-Formats bugfix updates

In general, Bio-Formats is no longer released when bugs are fixed,
but rather according to the OMERO release schedule.
Clarify and fix Bio-Formats Fiji documentation

Explain that Fiji ships with the latest Bio-Formats stable release,
that you can enable daily builds, and link to the Fiji wiki page for
further details.