Add feature : theme

Add theme aqua
Fix bug in centralized printing: need to drop and recreate table and REcentralize
Improve printing
Add documentation and code cleaning

sql/centralized.sql

@@ -25,8 +25,9 @@ CREATE TABLE centralized (
     c_j_id integer ,
     c_date date not null,
     c_internal text not null,
-    c_montant integer not null,
+    c_montant float not null,
     c_debit boolean default 't',
+    c_jrn_def int4 not null references jrn_def(jrn_def_id),
     c_poste integer references tmp_pcmn(pcm_val),
     c_description text,
     c_grp integer not null,

sql/theme.sql

@@ -24,3 +24,5 @@ create table theme (
 );
  insert into theme (the_name,the_filestyle,the_filebutton)
 	values ('classic','style.css',null);
+ insert into theme (the_name,the_filestyle,the_filebutton)
+	values ('aqua','style-aqua.css',null);