Bug 17504: Make the installer show the right dmbs help if wrong permissions

This patch changes the installer template for step 2 (DB rights check)
so it correctly displays MySQL-related message.
The previous code was doing the wrong comparisson, thus yielding
PostgreSQL documentation.

To test:
- Run:
  $ sudo koha-mysql kohadev
  > DROP DATABASE koha_kohadev ; CREATE DATABASE koha_kohadev;
  > REVOKE INSERT ON koha_kohadev.* FROM 'koha_kohadev'@'localhost';
  > FLUSH PRIVILEGES; \q
- Run the webinstaller through step 2
=> FAIL: You get the message in the attached screenshot
- Apply the patch, reload
=> SUCCESS: You are displayed a different warning message, with a link
to up-to-date MySQL docs on GRANT
- Fix permissions for the user:
  $ sudo koha-mysql kohadev
  > GRANT ALL PRIVILEGES on koha_kohadev.* TO 'koha_kohadev'@'localhost';
  > FLUSH PRIVILEGES; \q
- Reload
=> SUCCESS: All checks are correct and you can move on
- Sign off :-D

Signed-off-by: Josef Moravec <josef.moravec@gmail.com>

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>

koha-tmpl/intranet-tmpl/prog/en/modules/installer/step2.tt

@@ -20,8 +20,15 @@
         [% IF ( checkgrantaccess ) %]
   <p>User <code>[% user %]</code> has all required privileges on database <code>[% dbname %]</code>.</p>
         [% ELSE %]
-  <p class="error">user <code>[% user %]</code> doesn't have enough privilege on database <code>[% dbname %]</code> </p>
-  <p class="tip"> Ask for or make a change in the user's privileges. Need help? See [% IF ( mysql ) %]<a href=http://dev.mysql.com/doc/refman/4.1/en/grant.html>[% ELSE %]http://www.postgresql.org/docs/8.2/interactive/sql-createrole.html[% END %]this page</a>. User <code>[% user %]</code> must have USAGE, INSERT, UPDATE, DELETE, DROP and CREATE privileges on <code>[% dbname %]</code></p>
+  <p class="error">user <code>[% user %]</code> doesn't have enough privilege on database <code>[% dbname %]</code></p>
+  <p class="tip">Ask for or make a change in the user's privileges. Need help? See
+    [% IF dbms == 'mysql' %]<a href="https://dev.mysql.com/doc/refman/5.5/en/grant.html">
+    [% ELSE %]<a href="http://www.postgresql.org/docs/8.2/interactive/sql-createrole.html">
+    [% END %]this page</a>.
+  </p>
+  <p class="tip">
+    User <code>[% user %]</code> must have USAGE, INSERT, UPDATE, DELETE, DROP and CREATE privileges on <code>[% dbname %]</code>
+  </p>
         [% END %]
       [% ELSE %]
   <p class="error">No database named <code>[% dbname %]</code> detected.</p>