Moved image tag documentation to images section
Restructed search docs
Merge branch 'docs-changes' of https://github.com/kaedroho/wagtail into kaedroho-docs-changes
minor copyediting
fix more dead links to wagtailsearch_for_python_developers
Merge branch 'kaedroho-docs-changes'
Merge branch 'master' of github.com:torchbox/wagtail