KDE Plasma 5.2.2发布

KDE Plasma 5.2.2 发布，此版本是个 bug 修复版本，主要改进如下：

• Translated documentation is now available

• Create gtk-3.0 directory before putting the settings file into it. Commit.

• KScreen: fix rounding error in updateRootProperties(). Commit.

• KWin: Fix installation of GHNS material. Commit.

• Muon: Wait to fetch the KNS backend until we have OCS providers. Commit. Fixes bug #344840

• Plasma Desktop: Extract UI messages. Commit.

• Plasma Networkmanager: Make sure SSID will be displayed properly when using non-ASCII characters.

• Commit. See bug #342697