update icon and add hicolor icons

tower: https://tower.im/projects/8f19f0bf0e754f0b82ef2c24bc230973/todos/9013215438234694b27008a199825803/

Change-Id: I21648bca1f670185deb5e3a90fa3d1dc8e740e26
auto sync po files from transifex

Change-Id: I3e569b689cd057c787df36f0f5891188f7f9bc5b
Merge branch 'release/2014.2' into develop

Change-Id: I6f53046c61e5e27c3bcab3a75701e01870dbe0b0