dashboard changes to support saving drawings to a gallery

Conflicts:
	Gemfile.lock
fix css typo
Add workaround for chrome SVG clippath issue [finishes #69016256]
Add more workaround details to header
redo save to gallery using a new table instead of a column on activities
admin report page to see the most recently saved activities
fix schema.rb
fix admin gallery page
one more bit of cleanup
Merge pull request #437 from code-dot-org/gallery-again-again

Gallery again again
Merge pull request #436 from code-dot-org/chrome_34_workaround

WIP: Add workaround for Chrome 34 SVG clippath issue [finishes #69016256]
Automatically built.
Merge branch 'finished' of github.com:code-dot-org/dashboard into finished
Automatically built.
I believe this will break my work on stages, but that is a beta feature for admins at this point so i will take the time to fix it later.
Merge pull request #443 from code-dot-org/chapter-hotfix

I believe this will break my work on stages, but that is a beta feature ...
Remove Chrome 34 warning banner
Merge pull request #445 from code-dot-org/remove_chrome_warning_banner

Remove Chrome 34 warning banner
kill newline
Merge pull request #438 from code-dot-org/DSL

Working DSL to CSV for Toby