add functionality to automatically save some images to gallery
define assert_creates and assert_does_not_create so we don't nest assert_differences forever
Work in progress on refactored signup/in page views.
Polishing up the new signup/signin UI.
Review feedback from Laurel.
public gallery list page
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add total number of saved images to gallery
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Merge pull request #488 from code-dot-org/signup

Refactored signup/in page views.
Improve password error messaging on signup.
cr feedback from toby: fix spaces in css and duplicate font-size
cr feedback from toby: less magic more constant
i8nit
User#short_name refactor party
moar spaces in the css
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new jigsaw level
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typo fix