Adds a column with the percentage rate that the remote server
or realm is paying on the displayed plan.
We display 0% for community plans that are 100% sponsored.
For legacy plans or plans with a scheduled downgrade, we
display a placeholder, "---". Otherwise, the value is
calculated from the CustomerPlan discount field.
Also, renames `ad_hoc_query.html` to `activity_table.html`,
`realm_summary_table.html` to `installation_activity_table.html`,
and `activity_details_template.html` to `activity.html`.
Removes the style attribute in the installation activity template
and uses a CSS class, "installation-activity-header", to center the
h3 and p tags instead. This removes an exception from the custom
lint check.
View functions in `analytics/views/support.py` are moved to
`corporate/views/support.py`.
Shared activity functions in `analytics/views/activity_common.py`
are moved to `corporate/lib/activity.py`, which was also renamed
from `corporate/lib/analytics.py`.
Lauryn Menard