move popup css to stylus (shared module with the website)
Merge branch 'develop' of https://github.com/koemei/koemei-widget into develop

# By Renato S. Martins
# Via Renato S. Martins
* 'develop' of https://github.com/koemei/koemei-widget:
  align search panel
  fix left menu avatar search renders in the right panel specs rename some stylus files
build