change list_of_themes to CBV ThemesList
rewrite views to CBV
checked via pep8
compare to pep8
compare to pep8
work with profile
rewrite userprofile to CBV
add pagination to themes' list and create_theme()
add postform
rewrite create_theme()
login form
rewrite views to CBV
add validation to tags field
add app filesharing
add some tests
update tag creation