make reset-admin-pwd work with sqlserver as db backend the pyodbc sqlserver db backend depends on being passed the cw_upassword value as a buffer object to bind it to a binary column (which is usually done when CW is dealing with passwords).

[book] updated FAQ 'How to reset the password for user joe' with SQL Server syntax

fix test so that we don't actually depends on file and email cubes

[selectors] multi_lines_rset selector supports now optional operator for richer comparaisons

exception: specify expected parameter in NoSelectableException Enforce expected parameters, reformat exception message in class itself and change some log messages in calling code.

[testlib] don't wrap main test connection into TestCaseConnectionProxy, it should not be closed afterwards

[doc] add note about propagation on deletion of a watched relation

[book] add a link in hooks section to test, talk about create_entity in tests section

[book] add editable-table in views/table section and add an example to illustrate this view

[book] Talk about RichString in 'Yams schema' section

[tests] import TestSuite from lgc.testlib for further compatibility

[test] update test to unittest2 api (still using lgc.testlib though)