update menu icons and some ui tweaks
add remove-gray icon
Merge pull request #176 from haiwen/enhance_more_2x_icons

update menu icons and some ui tweaks
use new account menu icons
refactor common code of icons to utils/
ignore http request errros for /api2/events/
add play-gray icons
Merge pull request #177 from haiwen/enhance_more_2x_icons

add play-gray icons
[mac] fix missing ui file error for qmake
cleanup travis.yml
[mac] fix build issue under osx 10.6
[cleanup] cleanup compiler warning
Merge pull request #179 from Chilledheart/cleanup_travis_yml_patch_1

cleanup travis.yml
Merge pull request #178 from haiwen/bugfix_qmake_patch_1

[mac] fix missing ui file error for qmake
Merge pull request #180 from Chilledheart/maintain_mac_osx_min_requirement

[mac] fix build issue under osx 10.6
Merge pull request #181 from haiwen/cleanup_compiler_warning

[cleanup] cleanup compiler warning
updated translations
add dedicated icon for readonly repo
Merge pull request #186 from haiwen/enhance_icons_readonly_repo

add dedicated icon for readonly repo
handle events by a anonymous user