erp5_test_result: add/update ScalabilityDistributor and add portal_types/Test%20Result/view_graph.xml

ERP5ProjectUnitTestDistributor: add getTestType and subscribeNode methods (for scalaility compatibility)

Test should be independant and run in any order, so do not suggest a way to
force the order of tests.

there was issue with edit since getActiveProcess was called and
there was troubles with inexesting activity runtime environment

Code from Sven

This might break RSS rendering

Original code failed when 'limit' key is set to None.

http://bugs.jquery.com/attachment/ticket/5968/0001-Fix-jQuery.ajax-success-function-being-called-when-H.patch

When importing back ace.js containing a last line with whitespaces only, the
last line was not imported, and thus the file could never been downloaded
completely as its really size was less than the one on the File ZODB object.

Counting all documents matching some criterion has a cost proportional to
the number of those documents. Modules grow large easily (the effect
becomes quite noticeable from ~50k), and this information costs too much.