Bug 10755 - Add "Keyword as Phrase" to staff client advanced search indexes

This patch adds a "Keyword as Phrase" index to the search options in
the staff client.

Test Plan:

1) Go to the Advanced Search in the staff client and click on the "Keyword"
drop-down list.
2) Note that there is only a "Keyword" not a "Keyword as Phrase" option
3) Apply the patch
4) Reload the Advanced Search
5) Note that there is now a "Keyword as Phrase" option as well

If you want to test the functionality...it will depend on your catalogue
data.

Basically, a phrase search will allow you to find "Keyword Adjacent To
Keyword" rather than a more scattershot search that finds the keywords
regardless of their position to each other.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>

Template change is correct, and in my tests the searching behavior was
correctly modified: Using "keyword as phrase" returned only results
where the terms were adjacent.

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

Passes koha-qa.pl, trivial patch with no possible side effects.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit a1a4ff2bef)
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>

koha-tmpl/intranet-tmpl/prog/en/includes/search_indexes.inc

@@ -1,5 +1,6 @@
 <select class="advsearch" name="idx">
     <option value="kw">Keyword</option>
+    <option value="kw,phr">&nbsp;&nbsp;&nbsp;&nbsp; Keyword as phrase</option>
     <option value="au">Author</option>
     <option value="au,phr">&nbsp;&nbsp;&nbsp;&nbsp; Author as phrase</option>
     <option value="cpn">&nbsp;&nbsp;&nbsp;&nbsp; Corporate name</option>