Bug 12445: ading unit tests to test the routines : CountSuggestion, ConnectSuggestion...

Bug 12445: ading unit tests to test the routines : CountSuggestion, ConnectSuggestionAndBiblio, SearchSuggestion, GetSuggestionInfo, DelSuggestion, GetSuggestionByStatus

These routines were not tested

Test plan:
1/ Execute the command : prove t/db_dependent/Suggestions.t
2/ The result has to be a success without error or warning :
t/db_dependent/Suggestions.t .. ok
All tests successful.
Files=1, Tests=89,  1 wallclock secs ( 0.05 usr  0.01 sys +  1.52 cusr  0.08 csys =  1.66 CPU)
Result: PASS

Signed-off-by: Paola Rossi <paola.rossi@cineca.it>
Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Test pass, no koha-qa errors

But now there are 91!
prove t/db_dependent/Suggestions.t
t/db_dependent/Suggestions.t .. ok
All tests successful.
Files=1, Tests=91,  2 wallclock secs ( 0.05 usr  0.00 sys +  1.77 cusr  0.10 csys =  1.92 CPU)
Result: PASS

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>