Translate "add comment here..."
Translate "text" in procedure editor
Add 'New Block' to translatable strings
Add 'New Message' to translatable strings
Add 'next backdrop' and 'previous backdrop' to translatable strings
Add 'Add an Extension' to translatable strings
Translate 'Microphone volume:'
Add 'other scripts in sprite/stage' to translatable strings
Update paint tooltips when switching languages
Add 'Add' to translatable strings
Update 'Add' translation in paint editor when switching languages
Update translations for drawing properties when switching languages
Add 'video motion' and 'video direction' to translatable strings
Merge pull request #449 from LLK/missing-translation-strings

Add missing translation strings