Activity Timeline Redesign

Recently redesigned the activity timeline/feed in Close.io with a few goals in mind:

- Make it easier to understand at a quick glance the communication history with a lead, and visual separate different activity types.
- Allow filtering by different “types" of activities - for when you just want to find those call notes from 4 months ago without having to see all the emails in the meantime.
- Allow filtering by “my activity" if I only care about seeing my own communication with a lead.
- The ability to “collapse" really unimportant timeline events - like a missed call, without getting rid of them completely.
- An overall better (and more consistent) visual representation of the timeline

Kept the colors fairly muted so they didn't completely dominate the rest of the app's current visuals.

Read more here: http://blog.close.io/post/56353269213/activity-timeline-redesign