[gtksourceview/gnome-3-18] bibtex.lang: add some missing keywords

[Paolo Borelli <pborelli src gnome org>]

commit 18218102e3e2dcc8fe5c0c4bba138329f0c9eb5e
Author: info schrieveslaach de <info schrieveslaach de>
Date:   Wed Feb 24 11:02:00 2016 +0100

    bibtex.lang: add some missing keywords
    
    https://bugzilla.gnome.org/show_bug.cgi?id=762592

 data/language-specs/bibtex.lang |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/data/language-specs/bibtex.lang b/data/language-specs/bibtex.lang
index dff4d22..4ae450f 100644
--- a/data/language-specs/bibtex.lang
+++ b/data/language-specs/bibtex.lang
@@ -55,6 +55,7 @@
       <keyword>proceedings</keyword>
       <keyword>techreport</keyword>
       <keyword>unpublished</keyword>
+      <keyword>report</keyword>
     </context>
 
     <context id="field" style-ref="field" class="no-spell-check">
@@ -80,6 +81,14 @@
       <keyword>school</keyword>
       <keyword>institution</keyword>
       <keyword>type</keyword>
+      <keyword>doi</keyword>
+      <keyword>issn</keyword>
+      <keyword>isbn</keyword>
+      <keyword>url</keyword>
+      <keyword>numpages</keyword>
+      <keyword>subtitle</keyword>
+      <keyword>location</keyword>
+      <keyword>crossref</keyword>
     </context>
 
     <context id="bibtex">