Try to limit the number of extensions warning validation test

[Yvon TANGUY]

Tests des extensions
0 errors, 7 warnings, 0 notices
`addObserver` called in potentially dangerous manner

Warning: Authors of bootstrapped add-ons must take care to remove any added observers at shutdown.
chrome/content/prefs.permissions.js
        os.notifyObservers(null, NOTIFICATION_FLUSH_PERMISSIONS, PERMISSION_TYPE);
        os.addObserver(this, "perm-changed", false);
                `setSubstitution` called in potentially dangerous manner

Warning: Authors of bootstrapped add-ons must take care to clean up any added resource substitutions at shutdown.
lib/main.js
        resource.setSubstitution(CK_RESOURCE_ALIAS, alias);
SQL statements should be static strings

Warning: Dynamic SQL statement should be constucted via static strings, in combination with dynamic parameter binding via Sqlite.jsm wrappers (http://mzl.la/sqlite-jsm) or `createAsyncStatement` (https://developer.mozilla.org/en-US/docs/Storage#Binding_parameters)
chrome/content/ck.private.js
        if (connection.connectionReady) {
          connection.executeSimpleSQL("DELETE FROM " + DOM_DB_TABLE);
        }
Synchronous SQL should not be used

Warning: The use of synchronous SQL via the storage system leads to severe responsiveness issues, and should be avoided at all costs. Please use asynchronous SQL via Sqlite.jsm (http://mzl.la/sqlite-jsm) or the `executeAsync` method, or otherwise switch to a simpler database such as JSON files or IndexedDB.
chrome/content/ck.private.js
        if (connection.connectionReady) {
          connection.executeSimpleSQL("DELETE FROM " + DOM_DB_TABLE);
        }
SQL statements should be static strings

Warning: Dynamic SQL statement should be constucted via static strings, in combination with dynamic parameter binding via Sqlite.jsm wrappers (http://mzl.la/sqlite-jsm) or `createAsyncStatement` (https://developer.mozilla.org/en-US/docs/Storage#Binding_parameters)
chrome/content/ck.private.js
        if (connection.connectionReady) {
          let stmt = connection.createStatement(delQuery);
Access to the `execute` global

Warning: The use of synchronous SQL via the storage system leads to severe responsiveness issues, and should be avoided at all costs. Please use asynchronous SQL via Sqlite.jsm (http://mzl.la/sqlite-jsm) or the `executeAsync` method, or otherwise switch to a simpler database such as JSON files or IndexedDB.
chrome/content/ck.private.js
        stmt.execute();
        stmt.finalize();
`loadAndRegisterSheet` called in potentially dangerous manner

Warning: Authors of bootstrapped add-ons must take care to unregister registered stylesheets at shutdown.
lib/ui.js
        ssService.loadAndRegisterSheet(this._uriCSS, this._cssType);

Tests de compatibilité
0 errors, 3 warnings, 0 notices
Removed labels in use.

Warning: Some string matched the pattern `itemCookies\.label`, which has been flagged as having been removed or renamed in Thunderbird 31.

See bug https://bugzil.la/953426 for more information.
chrome/content/prefs.firefox.xul
        accessibleType="1003"
        label="&itemCookies.label;"
        accesskey="&itemCookies.accesskey;"
Removed labels in use.

Warning: Some string matched the pattern `itemCookies\.label`, which has been flagged as having been removed or renamed in Thunderbird 31.

See bug https://bugzil.la/953426 for more information.
chrome/content/prefs.seamonkey.xul
        accessibleType="1003"
        label="&itemCookies.label;"
        accesskey="&itemCookies.accesskey;"
Removed labels in use.

Warning: Some string matched the pattern `dateformat`, which has been flagged as having been removed or renamed in Thunderbird 29.

See bug https://bugzil.la/544315 for more information.
chrome/content/common.js
        var gCommon = {
          _sDateFormat : Cc["@mozilla.org/intl/scriptabledateformat;1"].getService(Ci.nsIScriptableDateFormat),
          _eTLDService : Cc["@mozilla.org/network/effective-