Localization of block type names in EPiServer 7
EPiServer 7 adds the concept of blocks, which differs in alot of ways from Composer blocks. One is how you provide localized names for the editor.
In EPiServer 7 we not only have pages, we also have blocks. Just as you translate page types by putting the translations in /language/pagetypes/pagetype, you need to organize block types in a similar /language/blocktypes/blocktype structure. Otherwise EPiServer 7 will not be able to load them.