Merge branch 'ui-ux-improvements' into 'master'

app/assets/stylesheets/generic/files.scss

app/assets/stylesheets/sections/snippets.scss

app/assets/stylesheets/sections/tree.scss

app/models/ability.rb

app/views/projects/blob/_actions.html.haml

app/views/projects/snippets/_blob.html.haml

app/views/projects/snippets/edit.html.haml

app/views/projects/snippets/new.html.haml

app/views/projects/snippets/show.html.haml

app/views/shared/snippets/_blob.html.haml

app/views/shared/snippets/_form.html.haml

app/views/snippets/_blob.html.haml

app/views/snippets/_form.html.haml

app/views/snippets/edit.html.haml

app/views/snippets/new.html.haml

app/views/snippets/show.html.haml

db/fixtures/development/12_snippets.rb

features/project/snippets.feature

features/snippets/snippets.feature

features/steps/project/snippets.rb