line-height should not be used as a spacing unit
Re-organize and deelop core & grid

+ Core should be its own layer
 - Including Layout & the previous core structure from sugar no
relabeld as common, as well ass atoms.

+ Pull in new grid system from Bootstrap 3.0.3 to utilize mixins for
complete grid development
+ Rename and work all grid mixins to perform appropriately
+ Set up grid mixin to assign internal grid spacing to specific elements
Add iconic images from flat-ui to mock-up the media grid area for the demo
fix some minor spacing in footbar.less
We need ne simple grid classes from bootstrap 3.0.3 for the grid to work properly , update all queries
develop media component
completely adopt flat-ui color scheme except for link color
fix for strict calculations in defaults.less