Adding schema version info to docs front page
merge dev_4_4 -D org -I include -E exclude: PR 545 (Adding OME 5 product menu)
merge dev_4_4 -D org -I include -E exclude: PR 549 (Zeiss LSM: use the longer display channel name)
merge dev_4_4 -D org -I include -E exclude: PR 560 (Update Bio-Formats 4 docs to 2013-06)