SEQ: do not automatically pick up files with the .seq suffix

Reported by Stéphane Dallongeville.
SEQ: one more type checking fix

See 063afd4cc7003efd0e596979035d13f44f56dbeb.  This makes
isThisType(RandomAccessInputStream) a little more strict, to make up for
the fact that the suffix is no longer a sufficient indicator of type.
Complete revert of Image->Transform

Additional changes needed to fully revert:
https://github.com/qidane/bioformats/commit/d3c2ceb9b607c40411f89e1e67ee24aad0e06f95
As the changes were copied into released-schema/2013-06 between the original
commit and the revert, so the changes ended up still in released-schema/2013-06
version.
Adding schema version info to docs front page
Merge pull request #559 from qidane/correct-release

Complete revert of Image->Transform
Merge pull request #561 from qidane/5-docs-2013-06

Update Bio-Formats 5 docs to 2013-06
Merge pull request #548 from melissalinkert/seq-suffix

SEQ: do not automatically pick up files with the .seq suffix