Updated `enb-bem-techs` to `0.1.0-beta12`
Merge pull request #1042 from bem/issues/1037@v2

Updated `enb-bem-techs` to `0.1.0-beta12`
rename files _normal -> _islands
Rename "normal" theme to "islands"

closes #1038
Fix symlinks in pages
Fix spin fallback
fix css and styles
fix some bundles
rename gemini screenshot folders
update enb-bem-specs