DAR-2146: create the JS layout module
DAR-2146: defining minimum and maximum article width in the layout module
DAR-2146: using layout module in fluid preview
DAR-2146: renaming the layout module
DAR-2146: adding the margins and breakpoints to the fluid layout module
DAR-2146: typo
DAR-2146: missing semicolon
DAR-2146 fixing scaling on maximum width set on preview
Merge pull request #1689 from Wikia/DAR-2146

Dar 2146 Fluid layout vars in JS