docs($htaccess): Fix some urls not working

- Fixing index pages for directories (e.g., .com/api/)
- Fixing index pages for branches and tags (e.g., .com/branch/, .com/tag/)
- Fixing loss of ability to look at tag-specific docs (e.g., .com/tag/3.9.0/)

[skip ci]
fix(dnd.js): fixes #1100 DnD TypeError in Safari
chore(*): prepare for 4.2.1 release #1100
chore(README.md): prepare for 4.2.1 release #1100

[skip ci]
chore($release): Start of 4.3 release cycle

[skip ci]
docs(README.md): Update examples link

[skip ci]
fix(karma-runner.js): Workaround for cross-browser issue in Assert.js
feature($s3) closes #1094 - add support for server-side encryption
chore($build) #1094 - increment build number

[skip ci]
chore($DRY) #1092 - DRY out internal param/endpoint store, prepping for dynamic ACLs
feat($dynamic-acl) closes #1092 - allow dynamic canned ACLs (per-file)
chore($dynamic-acl) #1092 - increment build number
[skip ci]
feat($azure) #1022 - stubs for Azure support
docs($azure) #1022 - link typo

[skip ci]
fix($azure) #1022 - accidentally broke S3 XHR upload handler due to namespace issue
docs($s3) typo

[skip ci]
Merge branch 'develop' into feature/azure
Merge branch 'master' into develop

Conflicts:
	README.md
	bower.json
	client/js/version.js
	fineuploader.jquery.json
	package.json
Merge branch 'master' into develop
Merge branch 'master' into develop