Compress banner images
Merge branch 'stagging' of https://github.com/voer-platform/vpw

# By wrwr (2) and Huy Vu (1)
# Via wrwr
* 'stagging' of https://github.com/voer-platform/vpw:
  Update images/contents/0e60bfc6.jpg optimize
  Update images optimize
  Compress banner images

Conflicts:
	static/images/contents/01f46fc2.jpg