Finish renaming files (new naming convention)

Use a test number instead of a global experiment number. The new
convention is explained in the README file.

v1.3.1/README.org

@@ -3,17 +3,21 @@ Scenarios
 
 * File naming convention
 
-: sS_jJ_dev_YYYY-MM-DD[_info][+suffix][_similarity].extension
+: sS_tT_dev_YYYY-MM-DD[_info][+suffix][_similarity].extension
 
 With:
 - S :: scenario number.
-- J :: test number.
+- T :: test number; for a given scenario, the first test number is 01,
+       and each time the scenario is played the test number is
+       incremented.
 - YYYY :: year.
 - MM :: month.
 - DD :: day.
 - dev :: client device short name.
 - info :: an optional informative string can be added, for example when
-  a scenario has to be run several times with different parameters.
+  a scenario has to be run several times with different parameters; when
+  not obvious, the meaning of such suffixes should be documented in the
+  report files.
 - suffix :: an optional suffix can be added, separated by a +; suffixes
   have the following meanings:
   + coord :: the real coordinate were added in the file;

v1.3.1/s15/s15_t01_fon_2012-06-15.txt

@@ -1,12 +1,7 @@
-/!\ s15_j17_fon_2012-06-15.agg has been deleted because one of the
-    listeners was not started.
+/!\ Test #1 (s15_j17_fon_2012-06-15.agg) has been deleted because one of
+    the listeners was not started.
 
 
-Rapport Jeu de Test 17
-
-
-Conditions :
-
 Temperature: 20.2°
 Humidity: 57
 Heure du test : 17h50

v1.3.1/s15/s15_t02_fon_2012-06-19.txt

@@ -1,6 +1,4 @@
-Rapport Jeu de Test 21
-
-The scenario is the same as for Jeu de Test 17. The only differences are the following:
+The scenario is the same as for test #1. The only differences are the following:
 
 Conditions :