[Fix][WEBSITE-1155] Remove unused CSS Styles from Bootstrap

[mmoraes]

JIRA

https://fameandpartners.atlassian.net/browse/WEBSITE-1155

Summary

Removal of a few unused Bootstrap CSS styles, in order to reduce the size of our CSS file.

Locally, with our current configs, it seems like it saved ~34kb.

BONUS:
Now that we are loading Bootstrap styles as separate SCSS partial files it's also possible to use its mixins and variables.

Note: I've left the unused CSS files to make it easier to reenable them in the future (by just commenting out the main scss file - 6b1c2d5).

Reviewers List

• @tiagoamaro
• @albertocorrea
• @ElGrecode

[tiagoamaro]

@mmoraes, do you think you you could use bootstrap-sass imports instead of explicitly including CSS libs? Example:

https://github.com/twbs/bootstrap-sass/blob/5d6b2ebba0c2a5885ce2f0e01e9218db3d3b5e47/assets/stylesheets/_bootstrap.scss

Those are provided by the gem already, as they're also updated when we update the gem.

[mmoraes]

@tiagoamaro @ElGrecode We currently cannot use bootstrap-sass due to the fact that they no longer support Rails 3.2 (ours): twbs/bootstrap-sass#806 (comment)

What can we do in this case, in order to keep Bootstrap's CSS maintainable in our end?

[tiagoamaro]

Btw, @mmoraes , if you're planning to introduce vendored bootstrap SASS, feel free to remove its gemified version (actually 🎉 for that).

[tiagoamaro]

@mmoraes , did two changes:

• Removed bootstrap-gem (thank you! 🎉)
• Moved all vendored files to vendor/assets/stylesheets instead of using it in the app folder

[ElGrecode]

👍 This should allow us to comb down naturally after this as well. Small savings is still savings 🎉

[mmoraes]

Thanks for the help, @tiagoamaro! 🎉

[mmoraes]

@tiagoamaro, I just tested this again and I think it's OK to ship. Much better this way!

@ElGrecode? @albertocorrea?

[tiagoamaro]

LGTM

Moving this to QA.

[tiagoamaro]

Note: #2205 is just waiting for this PR to be merged.