All test scripts to be executed are now named as T\d\d\d-name.sh,
numers in increments of 10.
This eases adding new tests and developers to see which are test scripts
that are executed by test suite and in which order.
There are currently 45 TESTS scripts. 36 of those load
test-lib.sh using '. ./test-lib.sh' and 9 '. test-lib.sh'.
In latter case test-lib.sh is first searched from directories
in PATH (posix) and then from current directory (bash feature).
Changed the 9 files to execute '. ./test-lib.sh'. The test-lib.sh
should never be loaded from directory in PATH.
The customization widget referred to a non-existing function
`notmuch-hello-insert-query-list'. The patch changes it to the
correct one - `notmuch-hello-insert-searches'. The relevant test is
fixed now.
The tests use default values from customization widgets to make sure
that these customization widgets work (at least on basic level).
The custom queries section test is currently broken.
