Merge pull request #7 from simon--poole/master

Hides navigation links of RES for [](#)
Issue #2: Merge all tournament thumbnails into a single sprite
#8: Add LCS NA and LCS EU tournament thumbnails
Remove duplicate thumbnail sprite
#9: Lessify
Team sprites revision 2014-01-16
#12: Remove fixed height for header elements in sidebar
Add social media sprite rules
Update sprite's README
Refactor tournament thumbnails
Remove tournamet thumbnails width
Thumbnails automatically recalculate its margins
Add Challenger Series tournament thumbnail for NA and EU
Collapsable in entries
Added team icon sprite & updated relevant CSS
Added Wazabi Gaming logo
Merge remote-tracking branch 'upstream/master'
Fixed worlds icons not displaying
Merge pull request #15 from Echohawkdown/master

#1: Merge all team icons into a single sprite
Thumbnails have now a size of 70x50