[#WEB-44] Add reporting functionality for all templates in the template manager

Add a "Reporting" tab to the Template manager page in the admin.

We're going to add 2 tables to display the performance of all of the templates:
Overview Table
Share Results Table

Overview Table:
* This table should contain all of the main operations for a template on the client:
--Template name (hyperlink to Edit Template page)
--Status
--Days active
--Number of times displayed by the client
--Successful shares
--Number of times dismissed
--Success rate (success/dismissed=)
* Export to csv

Results Table:
* This table will display the distribution of shares per template per platform
--Total shares per template
--Individual successful platform shares per template (e.g., Facebook, Twitter, Tumblr, etc.)
* Export to csv