New features
[87e60b9] Implemented a responsive layout (@alterphp, @javiereguiluz)
[7a5d3e6] Removed numeric label for collection items by default (@alterphp)
Bug fixes
[f0a920b][5292368] Improved the button styles (@alterphp)
[44f6e16] Do not override whole popover interface for user menu (@alterphp)
[bee0888] Don't show broken images for optional images (@javiereguiluz)
[57783bd] Added wrapper blocks and avoided processing blocks twice (@yceruto)
[3572bed] Updated Dutch translation (@KrisVanTienhoven)
[5115899][28e157b][79b80f2] Updated Polish translation (@dominikhajduk)
[907c4d1] Updated Czech translation (@Holicz)
[14198e4] Updated Portuguese translation (Uma Design)
[56c325e][c6efe6d][85fe4e0][98207c9][fbb882e][5ea9d32] Misc. doc fixes (@lyrixx, @arzurchris, @UNIT23, @simonwelsh, @dominikhajduk, @samnela)