in method info.magnolia.editor.block.jcr.MultiJcrBlockEntryResolution#getBlocksByLocale

only language part of locale is taken into account when filtering nodes. If we are using locale with country part set, filtering doesn't work properly.

boolean matchSubLocale = StringUtils.endsWith(name, "_" + locale.getLanguage());
I guess we should change this line with something like:
boolean matchSubLocale = StringUtils.endsWith(name, "_" + locale.toString());

module version 2.1.3

Steps to reproduce:

• Update language from site to DE e.g: /travel/i18n/locales/de@language 
• Edit a story > switch language to german > click on Copy blocks from English  > provide value for required fields -> save
  Expected results:
• Has block values for both languages
  Actual result:
• There's no value when switching to for German