#473 Use color variable for new alert styles

@vanstee wanted to keep all the colors in the variables file
First go at the widget
removed resize script, added responsive nav fix
few more adjustments to responsive nav
Merge branch 'master' of https://github.com/asm-helpful/helpful-web into landing
Small change on landing.css
Merge branch 'master' of https://github.com/asm-helpful/helpful-web into landing
Re-enabling responsive css
Updated screenshots animation to be as whale wanted, wo ho
Merge branch 'master' of https://github.com/asm-helpful/helpful-web into landing
Fix margin issues
Include icons
Close on overlay click
Stop further propagation of click
And prevent default...
Add some reset styles
Also reset borders
Changed to the darker red for primary buttons
Revisited the copy for sending yourself a support request
Changed to darker red on hover, as it suppose to be.