refactor: sort content by published field
#122
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The content is currently sorted by the sequential
indexfield. In this PR we sort using the already existingpublisheddate field and remove all references toindexsince now it would be unnecessary.Rationale
Sorting by a published field will make the process of adding new articles easier since we don't have to coordinate which article goes first. Now multiple articles from different contributors can be submitted simultaneously without coordination between them. This makes this repo more friendly for external open source contributions.