compress all images
Merge pull request #376 from pedromarins/fix-sprite

compress all images
changed new channel home to use display methods from decorator and open links in blank.
add channel flag to project header
removed unused images, removed about, recommended header and other unused things
Merge pull request #378 from pedromarins/fix-sprite

add channel flag to project header
Merge pull request #377 from diogob/new_channel_home_tweaks

changed new channel home to use display methods from decorator and open ...
Merge pull request #379 from diogob/clean_assets

removed unused images, removed about, recommended header and other unuse...
added field to store generated html for channel how it works
added auto_html extension to how_it_works
fixed bug sending the form with the wrong name was not saving the channel profile properly
started making how it works in a dynamic way WIP
Merge branch 'master' of github.com:catarse/catarse into new_channel_how_it_works
removed fixed menu, will replace it with dynamic version
changed varchar fields to text and added not null constraints in channels table
added methods to build the sidebar in the new how it works [fix #57686712]
fixing sidebar menu as we are using id
making channel translations generic to all channels
fixed how it works JS spec
moved new channel home and new how it works overwriting the old ones