keyword in multiple categories aggregated rather than separate in timelines

[arranr]

some keywords are found in different categories, e.g 'script' is in both 'additional' and 'artistic concepts' but it only appears once in the timelines list

[arranr]

semi-fixed, now separate keywords but not in correct order due to concat approach

[arranr]

words and categories are now separate but circles and spans do not distinguish between the different categories still