browser: migrate to bootstrap-sass v3.3.3
browser: migrate to bootstrap-sass v3.3.3

Use updated bower package name (drops'-official'), and update to
bootstrap v3.3.3.

omkarudipi/marklogic-samplestack,supriyantomaftuh/marklogic-samplestack,laurelnaiad/marklogic-samplestack,supriyantomaftuh/marklogic-samplestack,dmcassel/marklogic-samplestack,omkarudipi/marklogic-samplestack,supriyantomaftuh/marklogic-samplestack,marklogic/marklogic-samplestack,marklogic/marklogic-samplestack,omkarudipi/marklogic-samplestack,dmcassel/marklogic-samplestack,omkarudipi/marklogic-samplestack,laurelnaiad/marklogic-samplestack,laurelnaiad/marklogic-samplestack,marklogic/marklogic-samplestack,dmcassel/marklogic-samplestack,marklogic/marklogic-samplestack,dmcassel/marklogic-samplestack,laurelnaiad/marklogic-samplestack,supriyantomaftuh/marklogic-samplestack