Improve french locale, add new locale for some hard-coded verbiage

[prupke2]

Hey, awesome site - thanks for making this!

I speak French fluently, so I thought I'd help improve the French translations. I also noticed a few spots that had English hard-coded, so I added some localization there as well.

• Add new localization in a few places that were hard-coded to English
• Update French locale, and add the new localizations I added
• Add the new localizations I added to the code to the English and Chinese locale files. The text was copied from what was hard-coded, so there should be no verbiage changes for either of these locales. Hopefully someone can help translate the new Chinese ones at some point.
• Remove a few <br /> elements from all three locales. As you can see in the "Before" of the first screenshot below, this html was not getting rendered. 😬
• Fix a few readme typos

Home page updates:

Settings page updates: