Added feature file for behat test

- Added content formatting behat feature file Updated Given statement for Insert link behat feature file
- Added Behat test feature file for alignment buttons Updated formatting buttons feature file to include strikethrough formatting
Behat feature indentation (no content changes)
Behat: Profile feature (steps only)
Update 3.1.0-rc2.md

Corrected RC number in heading of page.
Shorter behat feature name

Looks better in relishapp ;)
Merge pull request #2419 from bilekt3/patch-1

Update 3.1.0-rc2.md
More specific behat tree assertion
Behat: Allow quoted HTML in assertion
Behat: More verbose error message in HTML field assertion
Behat: Avoid false positives in dropdown traversal

Was identifying fields like <input value="Select a page">
when querying for a drop down labelled "Page"
Behat: More "insert image" steps

Still needs definitions
Behat: "insert link" feature
Behat: Correctly quote selector in dropdown step
Behat: Friendler field reference
Behat: "insert external link" feature
Behat: "apply formatting" steps
Trailing semicolon to fix TinyMCE bug (fixes #2408)

Regression introduced by #2386
Remove StaticPublisher route. Now a module
FIX: Follow internal redirections for cli operations.
Merge pull request #2423 from wilr/cliredirects

FIX: Follow internal redirections for cli operations.