Scoping of .alert .close

Fixed scoping of .close for alerts.  Was causing modal dialog close buttons to be misaligned.
Remove divider after last element in breadcrumbs
Merge pull request #334 from jkelleyj/3

Scoping of .alert .close
make it work
Merge pull request #343 from glebm/fix-sprockets3

Refer to the new (?) option name for sprockets context
Fixed make-row and make-column mixins.

Top level row does not have negative margin in bootstrap3.0.0-wip.  Also, updated make-column to reflect current bootstrap3.0.0-wip settings
Merge pull request #1 from thomas-mcdonald/3

3
Merge pull request #344 from jkelleyj/3

Fix bootstrap-3.0.0-wip row padding
update to latest working copy of 3-wip
Merge pull request #352 from danchapman/3

Update to Bootstrap 3 preview scss files