Test removing secondary logo files
Test add secondary logo files
New Sass framework

Cleans up current Sass file and imports themes & label styles.
- Replaces $logo-position in top wysiwyg variables with $header-logo to
avoid unnecessary repetition throughout Sass file.
-Does not change Base Styles.
Merge pull request #1 from brettbradleycampbell/Jon-Sass-Branch

Jon's new StyleSheet test, in separate folder for now.