Update grunt-autoprefixer to 2.2.0

[ocean90]

Upstream changes:

• grunt-autoprefixer: ​https://github.com/nDmitry/grunt-autoprefixer/compare/v1.0.1...v2.2.0
• autoprefixer-core: ​https://github.com/postcss/autoprefixer-core/compare/2.0.2...5.1.5

grunt-autoprefixer has a new ​option `remove` which allows to remove outdated prefixes. This is by default true.

In build.diff​ you will see that this option removes our media queries for Opera: -o-min-device-pixel-ratio:. These are only ​supported by Opera 10 and 11 and since we support only Opera 12 and up, these lines can be removed.
-ms-animation and @-ms-keyframes was never supported in a stable branch of IE.

[netweb]

+1 Tested and same results as build.diff

[ocean90]

In 31504:

Update grunt-autoprefixer to 2.2.0

Upstream changes:

• grunt-autoprefixer: ​https://github.com/nDmitry/grunt-autoprefixer/compare/v1.0.1...v2.2.0
• autoprefixer-core: ​https://github.com/postcss/autoprefixer-core/compare/2.0.2...5.1.7

fixes #31337.

[ocean90]

In 31505:

Run Autoprefixer after [31504].

This removes media queries for Opera < 12 and -ms-animation/@-ms-keyframes which was never (dev versions excluded) supported by IE.

see #31337.