ImageJ: disable file grouping when not reading from the filesystem

In particular, this disables grouping when reading over HTTP, as that is
at best extremely slow.

Fixes #12158.
target-test-runner: exclude package and log4j jars

Fixes #12114.
docs: Drop XML_SCHEMA and XML_DTD
cpp: ome-compat: Document boost::filesystem fallbacks
Add failing tests to TestBfGetPlane

The input checking logic in bfGetPlane had a bug where x and y were both
tested against the same dimension. This commit should add failing tests for
this issue.
Fix input check validation in  bfGetPlane
Merge pull request #1117 from rleigh-dundee/cpp-doxygen

cpp: Minor doxygen fixes
Merge pull request #1121 from sbesson/rebased/develop/bfgetplane_fix

Fix bfGetPlane tile input check (rebased onto develop)
Merge pull request #1107 from melissalinkert/rebased/develop/test-runner-classpath

Exclude log4j and packages from target-test-runner (rebased onto develop)
Merge pull request #1099 from melissalinkert/rebased/develop/disable-group-files

Disable file grouping in ImageJ remote import plugin (rebased onto develop)