Timeline state/inifinite loop fix

Closes #193 (closed), #259 (closed)

• Refactored timeline bloc in a manner similar to cafeteria bloc
• Merged Interaction bloc into timeline bloc
• Fixed pagination bug where page index would be read from a null state and would therefore default to page index 1
• Fixed state handling in timeline, now widgets inside the timeline will keep their state while scrolling

I noticed some more issues with this MR, i will further work on it.

Known Issues:

• Timeline resets after navigating to another tab and back to timeline.