group Safari browser bugs by OS

BS3 commits: caed2c03035af2fb291e1e391c7cbb551b24cc87
Add Wall of Browser Bugs entry for 15205

BS3 commits: e1484cc65df07886bddffc3f6b65ff5fb7b39fdf
Add Wall of Browser Bugs entry for 11266, 13098

BS3 commits: cde3093351d9d0923c7f4c07dede33ca19de30cb
group Safari browser bugs by OS

BS3 commits: caed2c03035af2fb291e1e391c7cbb551b24cc87
fix "propertes" typos in comments

BS3 commits: b8844f639fcddb2ef70758ad4b0dcf89f9792d73
grunt