Merge pull request #1720 from tedks/master

make drag_action_title unambiguous
create secrets.yml per rails upgrade instructions. It uses the secret key from site.yml
add test for deleting all stuff of a user when this users is deleted. Fixes #1447
fix #1400 where deleting a user will clean up tags and dependencies too
Use latest Tolk from Rubygems
Update codeclimate-test-reporter gem
Update capybara gem
Update rspec-expectations gem
Remove metadata from top of changelog

[ci skip]
Pull changelog entry from Tracks 2.2.3

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Recommend upgrading from 2.2.3

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Convert changelog to Markdown

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Minor changelog polish

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Specify pages for MkDocs

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Fix links on same line

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Bump version to 2.4devel
Ruby >=1.9.3 is required for Rails 4.1

[ci skip]

(cherry picked from commit 595aa1458559426af588a28056e323346d296bd1)
Travis: notify IRC without joining channel