Bug 18693: Translatability: Get rid of exposing a [%% FOREACH loop in translation for branch-selector.inc

The file branch-selector.inc exposes the following line to translation
(due to newlines insied a tt directive):
%s %s [%% FOREACH branch IN branches; IF branch.selected; selectall = 0; END; END %%]

Additionally, export.tt exposes the following line to translation:
[%% INCLUDE 'branch-selector.inc' branches = libraries %%]

To test:
- Apply patch
- In Staff client, go to Home > Tools > Export data
- Verify that library selection behaves as before
- Bonus test: Create a "language" aa-AA (perl translate create aa-AA
  from folder misc/translator, verify that lines mentioned above do
  no longer appear in aa-AA-staff-prog.po
- Run QA tools (newest version with test for newlines in tt directives)

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

koha-tmpl/intranet-tmpl/prog/en/includes/branch-selector.inc

@@ -1,10 +1,10 @@
 [%# First check to see if we have anything selected, otherwise we select all %]
 [% selectall = 1 %]
-[% FOREACH branch IN branches;
-    IF branch.selected;
-        selectall = 0;
-    END;
-END %]
+[% FOREACH branch IN branches %]
+    [% IF branch.selected %]
+        [% selectall = 0 %]
+    [% END %]
+[% END %]
 <div class="branchselector">
     <p><a href="#" id="checkall"> <i class="fa fa-check"></i> Select all</a> | <a href="#" id="checknone"> <i class="fa fa-remove"></i> Clear all</a></p>
     <div class="branchgridrow">

koha-tmpl/intranet-tmpl/prog/en/modules/tools/export.tt

@@ -97,8 +97,7 @@ $(document).ready(function() {
         
         <li>
             <label>Library: </label>
-            [% INCLUDE 'branch-selector.inc'
-                branches = libraries %]
+            [% INCLUDE 'branch-selector.inc' branches = libraries %]
         </li>
     </ol>