add alt field to images
add alts to imgs
add migration for making alts for all images
fix alts as google recomend
https://support.google.com/webmasters/answer/114016
add alt to show page
Revert "fix alts as google recomend"

This reverts commit 9bdca775d11105822f766784edbb9659423148be.
update tests
Merge branch 'dev' of https://github.com/HH-project/hh into seo_alts

Conflicts:
	db/schema.rb
Merge branch 'seo_alts' of https://github.com/HH-project/hh into seo_alts
add small test fix
Merge pull request #61 from HH-project/seo_alts

Seo alts