Fixes #14785
Ref #13754
Ref badcd1b6

(cherry-picked from 95b21c6e)

(cherry-picked from a74ad04b)

(cherry-picked from cd4e25e9)

iOS has the window.onbeforeunload field but doesn't support the beforeunload
handler making it impossible to feature-detect the support.

(cherry-picked from 988d99ad)

Fixes #14717
Closes gh-1496

(cherry-picked from d41fc68d)

(cherry-picked from d63243d0)

This fixes an error introduced by the previous commit.

Fixes #14731

IE11 fixed the checkbox defaultValue issue but not textarea. Rather than
creating a new detect name I'm reusing the old one to protect anyone who
is unwisely using this externally. Re-fixing the defaultValue when it
doesn't need to be done is not a problem, so leave that code for IE11.

Fixes #14716
Closes gh-1495

(cherry-picked from 3f3f4589)

Chrome 31 reports incorrect offsetWidth on a table cell with fixed width.
This is fixed in Chrome 32 so let’s just skip the failing test in Chrome 31.
See https://code.google.com/p/chromium/issues/detail?id=290399

(cherry-picked from c11becbb)

(cherry picked from commit 391c21b1)

Ref b8d0d54a
Fixes #14701

(cherry-picked from 20ea8071)

(cherry-picked from a2250b0f)

Thanks @gibson042

When new option element is added to select box we need to force reflow
of newly added node in order to workaround delay of initialization props.

try...catch statment is required for bug isolation

Fixes #2252

Fixes #14686

This check is redundant since jQuery.fragments object does not exist anymore
(cherry-picked from 38c122a7)

Closes gh-1466
Fixes #13240

Fixes #14657
(cherry picked from commit 9ac88dea)

* Cherry-pick took the wrong lines for a couple of things.
* Update and commit dependencies after `grunt bower`

(cherry picked from commit 08581447)

Fixes #14623
Closes gh-1473

(cherry picked from commit b407bdde)

Closes gh-1377

Closes gh-1476
(cherry picked from commit 6de1d973)