Different changes have been applied:
* Allow integer unix timestamps as parameters for timestamp columns
* Remove alias-rewriting from Url class
* Remove all traces of raw_timestamp
* Use new filters
This takes care of timestamp columns, modifies queries in a way not
depending on db functions, filters are passed through to subqueries
for better performance.
Class names in namespaces should not be chosen as once we didn't have
such. The fact that we already did "use Db\Connection as DbConnection"
is the best hint that naming was wrong.
So this patch renames Db\Connection to Db\DbConnection and does the
same with DbQuery. DbQuery has been adjusted to fit our new SimpleQuery
and to handle the new Filter implementation.
Thomas Gelf