Fails on double-dots or double-dashes in emails.
Checks for consecutive dots in email address and fails them.
Fixes DoSomething/dosomething#1394.
Merge pull request #198 from DoSomething/email-fix

Email fix
Merge pull request #203 from DoSomething/password

Fixes DoSomething/dosomething#1394.
Default purple h1 through h3. Dark gray h4.
Default heading styles.
Paragraph, small, and superscript styles.
Applying list item styling to base element.
Moving body copy color in with other color variables.
Cleaned up layout in styleguide.
Rounded bullets look pretty.
Footer tweaks based on design review.
Remove highlight pattern.
Clean up status message pattern.
Updates styleguide (colors, fonts, heading alt style, modal markup).
Added font size $flipping-massive!
Clear headers by default.
Banner header pattern.
Ordered list styling!