Fixes useability issue where the drop area was too small, and you couldn't see it.

don’t let `react-tooltip` decide on placement for the action menus. Force left or right depending on language  and the location. (It turned out there were other places it overlapped, the sprite selector was just the most obvious)

Also added jsdoc to locale-utils

Move the labels above the inputs for languages that don’t fix in the width of the sprite-info pane.

Because of the different widths of everything I left aligned them.

Examples,
Abkhaz, Catalan, Greek.

renamed the `rtl-locales` lib file as `locale-utils` as  it’s doing more than rtl now. RTL should probably move into the scratch-l10n repo, but should the `wide-locales` setting? That seems like something that is gui specific. I don’t like having to hard code the specific languages that don’t fit, but there didn’t seem to be a better way to handle it right now.

I think this switches all the icons we saw. I also switched the icons on the tabs (the blocks going the wrong way looked bad).

Also remove some obsolete code

Fixes https://github.com/LLK/scratch-gui/issues/1064

Changed existing string ids to use the convention `<repo>.<component>.<identifier>`

With jscodeshift thank God

* Fix costume loading in sprite info pane

Requires LLK/scratch-vm#517

* Fix costume loading in costumes tab

Requires LLK/scratch-vm#517