Bump grunt-jscs-checker to 0.5.1

BS3 commits: 7bc8db9558bf222196ab57d176aff08fab6ee552
Remove deprecated JSCS rules and add requireSpaceAfterLineComment

BS3 commits: 09c2e41ec4c7f3892ee3568f70bf5aef7245cdb2
Update a few source files to comply to new JSCS rules

BS3 commits: 587451ad9a2b288ed54857c6ac291609a6394c6f
Document 13863

BS3 commits: a33f6f89301914dcca781db5f8d8b8ad5fcd54ea
grunt

BS3 commits: 14829474052cc30ca89c72e035f5b88978af6eb5
grunt dist

BS3 commits: a4fa8d07c8679628d50d66b239874078735897f1
fixes 13881: restore existing striped progress bar behavior with theme styles

BS3 commits: 8bd4163ad463a0f208a55a8f64ba7fc6cb826282
Fixes 13872: Always apply padding to .form-control-static for that vertical alignment

BS3 commits: 1e53dcd137e7d8c8abe26af610ebb14c26de1043
tweak alert per 13875

BS3 commits: 34248437c3bc7278f912c9005d3fd4877b723d83
grunt dist

BS3 commits: a4fa8d07c8679628d50d66b239874078735897f1