markup fixes
Markup fixes
flip effect on components
Merge pull request #364 from mozilla/flip

flip effect on components
Update CONTRIBUTING.md
Merge pull request #367 from davidascher/remove-designer-borders

scope borders and padding for designer
s/flathead/appmaker/
Merge pull request #368 from mozilla/no-flathead

s/flathead/appmaker/
flip cleanup
Merge pull request #369 from mozilla/betterFlip

flip cleanup
make opening the install page open a new tab