Merge branch 'release/0.15.8.4' into develop
Use double quote instead of single quote because single quote will lead IE8 crash.

http://stackoverflow.com/questions/10294206/font-face-crashes-ie8
Merge pull request #59 from Eric-Guo/master

Fix web font lead IE8 crash
Merge remote-tracking branch 'origin/master' into develop
merge pull request for fonts
merge user pull request for fonts
Merge branch 'release/0.15.8.5'
Merge branch 'release/0.15.8.5' into develop
tile drag component (beta)
now possible dragging between groups
and handle events 'drag' (drag starts) and 'drop'
add animated preloader images
update version
Merge branch 'release/0.15.8.6' into develop
tile drag component (beta)
now possible dragging between groups
and handle events 'drag' (drag starts) and 'drop'
add animated preloader images
update version
fix icon in nav-bar
fix icons (icon-*) in nav-bar
fix icons (icon-*) in nav-bar
fix icon in nav-bar
'mmm'