Merge pull request #9 from j3nda/develop-s2

add "s2" css theme into javascript-theme-switcher (~right top on the pag...
new css theme: zatebou.cz (~for my own project) based on "s2" css theme; and this new css theme into javascript-theme-switcher (~right top on the page)
pof (~proof of concept) about graphical layout: login.html, @see: https://github.com/j3nda/admin-template-charisma/issues/3
some minor development, while founding ideal login layout
add s2 logo on login.html page
cleanout: img with co-op js and css; cleanest directory structure corresponding to css/3rd-party structure
Merge pull request #11 from j3nda/develop-zatebou

[develop-zatebou] -> [develop-s2]