Fix assignment in condition

Corrects the use of assignment operator ('=') rather than boolean ('==') in conditional expression.
Fix issue #924

As reported by @cvan, this Markdown syntax won't work inside of a
raw HTML table. Use a <strong> tag instead.
added missing contributor image for pbakaus
Merge pull request #925 from jacquerie/issue-924

Fix issue #924
Update deviceemulators.markdown
Fix issue #927

Improve the layout as reported by @jacquerie.
Merge pull request #928 from jacquerie/issue-927

Fix issue #927
Fix issue #929

Use .table-n classes to add a bit of whitespace between columns
to improve readability as reported by @jacquerie.
Pulled hard coded strings from templates into a translate-able file.
Merge branch 'master' of https://github.com/google/WebFundamentals
Japanese translations for template strings from @agektmr
Adding import/exporttrans to aid in translations.
Updates to responsive table headers
Merge pull request #930 from jacquerie/issue-929

Fix issue #929
Merge pull request #920 from brandt/fix_assignment_in_condition

Fix assignment in condition
Merging @pukapukan's KO translation as part of #926
Added support for translating the _betterbook.yaml file