Create UI designs for Timeline view

[bnvk]

This search visualization should take into account the following:

• [x] Display basic Event items
• [x] Display Document files and distinguish
• [x] Color coding by categories / tags
• [x] Sorting by: year, month, week, day
• [x] Sort by: ascending / descending
• [x] Switching between timeline / normal view
• [x] Quick adding of new events

[bnvk]

Started in 209568823eae9dbc829b237adbac1c5ad8ce3616 with interfaces/LookingGlass-timeline.svg