MDL-59459 Golbal Search: Increase file indexing coverage
Increase the scope of the files that are detected and indexed by Moodle's Global Search. This includes intro and content areas of search areas. The use case here is in a description for an activity there is a file added that contains more information about the activity. It would an advantage to be able to search this content as well. It would also allow search engine plugins to be able to index non text files such as images.