#167 Render percentages on the site_usage graphs

#167 Render legends correctly.

#167 Refactoring graph JS. Added mouseovers.

Remove January data from graphs. Allow pages to select their colorscheme.

Stacked graphs with sane server-side data wrangling working. Percentage mode half-impemented.

Done integrating graphs onto site_usage/publishers and site_usage/datasets. Including some interesting queries.

Refactor graph code. Querying to build a Top Packages graph.

Graphing dataset downloads.

Refactoring and tidying Rickshaw code. Placeholder graphs inserted. Front page sparklines are sensibly sorted.

Feature #162: Added Rickshaw graphs to most panes of statistics. Needs a little tidying for clarity.

Feature #162: Added sparkline graphs to the overview of analytics. Could be query optimised.

Added modified version of the JQuery sparkline library.

Implements downloads counts (for dataset resources) and fixes an issue with 'All' records.

- Fetches the data for downloads (either direct or cached) from when a user clicked on a
Download button. We lookup the resource for this url (based on .url or .cache_url) and
then associate the download count with the package it belongs to.
- Fixes a bug (#211) where the All records are deleted for every url, even if that url was
not fetched (and therefore won't get a new All record).

Only show the months for Downloads that we have

Minor tweaks

Minor tweak to naming

Update to handle missing downloads data

Error check for potentially missing data

Make sure we total the vals for 'All' rather than just duplicate the entry

Remove write to stdout

Adds the ability to fetch information on download events

Force len in avg calc to be a float too

Change bounce calculation to use visitBounceRate rather than calculated

Updated count of deleted records

Typoe

Minor tweak to see what is going on with delete()

Updated with more logging

Fixing two bugs in one, making sure All are deleted as well as period and fixing a string concat problem

Modified model for delete() to check != 'All' instead of 'all'

Template fix for broken publisher links

Reverted previous change - I found a better way to do the css in DGU.

Add in <hr> to box titles, in line with DGU style change

Merge branch 'master' of github.com:datagovuk/ckanext-ga-report

Avoid problem when testing.

Make sure that the url normalization for social info takes the correct data

Make sure clicking publishers carries the current month across

Change the entry for the current month to include the date that reports are available to.

- Requires a migration
alter table ga_stat add column period_complete_day text;
- Makes sure that GA_Stat entries have the period_complete_day set
- Cleans up the template and moves the drop-down to the util template

Token is now referenced in the config, making it easier for the gov_daily script to kick off downloads.

Adjust popularity score to take account of number of days in the month.

Actually returning the score instead of 0

Merge branch 'master' of github.com:datagovuk/ckanext-ga-report

Added new method to get a recent score for a dataset

Sort the dataset report by views, since we only display that now.

Changes to fix some issues around bounces and presentation