Merge pull request #895 from coreymckrill/patch-2

Portfolios: use correct columns variable props @coreymckrill
Merge pull request #908 from Automattic/ticket/485,906

Ticket/485,906
Update css min maps
Updated Changelog for 3.1
Custom Content Type: Improvements to the portfolio shortcode css

Responsive, If more then 2 columns use in mobile view display the grid
in 2 columns for readability.
Removed commas and columns from css implement via PHP.
Simplified the css, prefixed the css classes to minimized styling
conflicts.
JSON Endpoints: Use full module description.

Plugin-like HTML formatted full description.
Fixed admin menu bug on mobile
Merge pull request #911 from Automattic/portfolio-shortcode-css

Custom Content Type: Improvements to the portfolio shortcode css
Jetpack logo now acts as home link

looks better on mobile
Changed tittle attar call
Updated changelog: Bugfix isn't a word, added for Genericons update
Updated nav
Merge pull request #912 from Automattic/jetpack-home-link

Restyling of JP nav
Bump version to beta4.

I accidentally tagged the beta3 release without bumping the version, so
skipping straight to four.
Merge pull request #909 from Automattic/update/module-full-description

JSON Endpoints: Use full module description.
Changelog Update: Grammer and Spelling fixes props @richardmtl and @kraftbj
Changed style of Settings button
Merge pull request #914 from Automattic/jetpack-home-link

Changed style of Settings button
Carousel: Add and use an in_gallery variable
set by a low-priority post_gallery hook

Props @chrisbliss18
Carousel: fix check if we're in a gallery