Contribution Analytics : more timespan + download to csv

Problem to solve

• Limited timespan (3 months) while contribution usually done for KPI on 6-months basis or more
• can't download contribution analytics table to csv, I need to create custom parser based on html source (on js-analytics-data). However it will be more convenient if there's a built-in button for this

Proposal

1. Ability to longer timespan, maybe up to 1 year? Or better yet, don't limit with 3 "hardcoded" options (last week / month / 3 months), but give ability to select by date range.
2. Add download to csv button on contribution analytics UI