Translated 09a-Index_creation_options_sparse-Lecture.srt. Closes #389
Translated 24a-Aggregation_Options-Lecture.srt. Closes #402
Translated 24b-Aggregation_Options-Answer.srt. Closes #403
Fixes according to feedback from @jcarlosgarcia #389.
Fixes according to feedback from @puentesarrin #389.
Merge pull request #417 from juancarlosfarah/issue-389

Translated 09a-Index_creation_options_sparse-Lecture.srt. Closes #389
Fixes according to feedback from @jcarlosgarcia #403.
Merge pull request #420 from juancarlosfarah/issue-403

Translated 24b-Aggregation_Options-Answer.srt. Closes #403
Fixes according to feedback from @jcarlosgarcia and @puentesarrin #402.
Merge pull request #419 from juancarlosfarah/issue-402

Translated 24a-Aggregation_Options-Lecture.srt. Closes #402
Ignored swp files.