updating web doc for embedding viewer
minor fixes
addressing https://github.com/openmicroscopy/ome-documentation/pull/1038#issuecomment-64881852 comments
minor fixes to https://github.com/openmicroscopy/ome-documentation/pull/1038#issuecomment-65769721
adjusting warning box
addressing @will-moore comments
Replace comma by and
clarify confusing image/pixel sentence
Merge pull request #1042 from mtbc/trac-11779-graphs

document graph traversal reimplementation for developers
Fix Python version sentence as per JM's suggestion
merge develop -Dorg -Ssuccess-only: PR 1038 (updating web doc for embedding viewer)
merge develop -Dorg -Ssuccess-only: PR 1041 (Units documentation)
merge develop -Dorg -Ssuccess-only: PR 1053 (Development tools)
merge develop -Dorg -Ssuccess-only

Repository: openmicroscopy/ome-documentation
Updating 5114443..0fea7a3
Previously merged:
  # PR 1042 mtbc 'document graph traversal reimplementation for developers'

Merged PRs:
  # PR 1038 aleksandra-tarkowska 'updating web doc for embedding viewer'
  # PR 1041 joshmoore 'Units documentation'
  # PR 1053 sbesson 'Development tools'

Generated by OME-5.1-merge-push#644 (http://ci.openmicroscopy.org/job/OME-5.1-merge-push/644/)