fix bug where blank author would show up in exchange; misc exchange refactoring
ignore broken questions in form exports
remove unused view edit_app_lang
Update i18n docs

Mainly adding string interpolation example that came up in a recent PR
Merge pull request #2077 from dimagi/by

fix bug where blank author would show up in exchange; misc exchange refa...
Use jQuery fadeOut in a way that is friendly to knockout in FireFox
Triple equals
Merge pull request #2082 from kennknowles/ff-safe-fade-out

Use jQuery fadeOut in a way that is friendly to knockout in FireFox
Merge pull request #2080 from dimagi/i18n-docs-update

Update i18n docs
add proxy2 and minor cleanup
Merge pull request #2083 from dimagi/proxy2

add proxy2 and minor cleanup
fit yt-video to width of parent
don't 404 for valid forms
Merge pull request #2085 from dimagi/form404

don't 404 for valid forms
Merge pull request #2084 from dimagi/vidd

fit yt-video to width of parent
Merge pull request #2078 from dimagi/question-export

ignore broken questions in form exports
Merge pull request #2079 from dimagi/remove-unused

remove unused view edit_app_lang
Update i18n docs

Mainly adding string interpolation example that came up in a recent PR
add proxy2 and minor cleanup
remove couchexport tests from travis