Support placeholder translations in xx.yml
Right now all translations should be specified in
placeholders.yml. This way if someone adds a new language the “global”
placeholders.yml should be modified.
This should be changed to use
xx.yml files... For example:
en: placeholders: view_welcome_index_left: Content, welcome page (left column bottom)
At the same time translations in
placeholders.yml should be supported as well. It should fall back to this translation if it's missing in
xx.yml (or vice versa?). Why so? For new placeholders which should be possible to distibute in separate files!..