Localization gallery shouldn't default to all localizations in a project without a confirmation click

[bctcvai]

When going to the localization gallery, the default shouldn't be to load 'all localizations' as this isn't scalable for projects with hundreds of thousands of localizations. There could be a button to do this, if the user really wants to. Currently there can be a multi minute delay to load the page until one can apply filters on the localizations to analyze.