descpage: implement loading gnuplot script

Issue #1 (#1)

euroexchange/descpage.py

@@ -52,6 +52,18 @@ class DescPageBot(pywikibot.bot.Bot):
         # Update wiki page
         self.update_page()
 
+    def load_gnuplot_script(self):
+        """
+        Load the gnuplot script for current job
+
+        @return Gnuplot script content
+        @rtype str
+        """
+
+        with open( os.path.join(
+            Config.gnuplot_script_dir, self.job.script + ".plt" ), "r") as fd:
+                return fd.read()
+
     def parse_page(self):
         """
         Load current page content and parse with mwparser