fix pdf export + add download_as_pdf template string and action (#110)

* fix pdf export
add download_as_pdf template string and action

* after pdf export click
- close dropdown
- open in new tab

* proper fix function

locales/en.js

@@ -308,6 +308,7 @@
 	"list": "Export List",
 	"link": "Link",
 	"download_space": "Download Space",
+	"download_as_pdf": "Download Space as PDF",
 	"type": "Type",
 	"download": "Download",
 	"Previous Zone": "Previous Zone",
@@ -321,4 +322,4 @@
 	"mute_present": "Unfollow",
 	"follow_present_help": "If someone else is presenting this Space, the other members automatically follow the presentation. Switch following on or off with this button.",
 	"export": "export"
-}
+}