adopt @pwalczysko's "my" suggestion
rewrap paragraph
adjust wording re. inadvertent deletion

inspired by @pwalczysko
minor rewording re. thumbnails possessing pixels
Add new section about development tools
Modify scc title and introduction
Add stub page for omego
Link from ci-docs, improve ref to CI jobs, fixed typo
Add section about tools maintenance
Define Pypi extlinks
Merge pull request #1052 from manics/jekyll

Add instructions for using Jekyll
Prepend OME to the development tools title
Minor fixes
Mention yaclifw in the package dependencies
merge develop -Dorg -Ssuccess-only: PR 1041 (Units documentation)
merge develop -Dorg -Ssuccess-only: PR 1042 (document graph traversal reimplementation for developers)
merge develop -Dorg -Ssuccess-only: PR 1053 (Development tools)
merge develop -Dorg -Ssuccess-only

Repository: openmicroscopy/ome-documentation
Excluded PRs:
  # PR 1038 aleksandra-tarkowska 'updating web doc for embedding viewer' (status: error)
Updating a3e7d3e..5114443
Previously merged:
  # PR 1052 manics 'Add instructions for using Jekyll'

Merged PRs:
  # PR 1041 joshmoore 'Units documentation'
  # PR 1042 mtbc 'document graph traversal reimplementation for developers'
  # PR 1053 sbesson 'Development tools'

Generated by OME-5.1-merge-push#641 (http://ci.openmicroscopy.org/job/OME-5.1-merge-push/641/)