erp5_mysql_innodb_catalog: Count using a subquery so that "distinct" have same semantics as search_results
erp5_mysql_innodb_catalog: Optimisation to z_count_result

If no select expression is passed, just count distinct uid as before 6e1a33d
Listbox: stat method should be searchResults, not countResults
Listbox: do not get stat values on brains by index when we can simply get them by key (ie. column name)
remove unused z_search_folder ZSQL method
Remove module portal type descriptions that were copied from Folder docstring
TradeModelPath: allow to dynamically configure source & destination trade
testXHTML: do not jslint erp5_ace_editor
ListBox: add some more "technical parameters" not to pass to catalog
Tests: print the time taken to load mysql dump
Tests: set zope to debug mode if running with -D

This is mostly to prevent starting when some products cannot be imported
Tests: no longer add current directory python's sys.path

I guess nobody remember psyco
Test Results: fix the condition to display Zelenium tests in a table