CZ translation update (client.cs.yml, server.en.yml) + update of pseudolocalization
Remove dashboard welcome message
Use wrenches instead of cogs for admin buttons that let you change something/someone's settings
Some javascript refactoring: Move markdown functions into their own classs, remove extraneous `window.` calls.
Moved Markdown out of Discourse.Utilities -> Discourse.Markdown
More Markdown refactoring - fixed bug with Pagedown not showing on user profile - replaced jQuery occurrences with $.
Merge pull request #371 from kubabrecka/cz_update1

CZ translation update (client.cs.yml, server.en.yml) + update of pseudolocalization