Adds script to parse a varnish log to document hit records.
Label the ident relationship as documentid.
Adds a function to produce the recent date in SQL.
Adds the function for acquiring the hit average for a module.
Refactors testing setup into functions.
Adds a function to acquire the documents percentile.
Adds popularity search sorting. Fixes #39
Adjust to ignore *.log files only in the repo root. Fixes missing test data.
Adjusts hits table schema to require the time zone in timestamps.
Adds rank optimization tables and an associated update function.
The update function is to be called after the batch import of hits.
Use the update_hit_ranks SQL function after the hits have been inserted.
Wires the recent_hit_ranks table into search.
Merge branch 'master' into hits-counting
remove uneeded custom function
Merge branch 'master' into sql-file-access

Conflicts:
	cnxarchive/database.py