Add Lithuanian to processing languages

SOLR doesn't support Lithuanian, maybe it can be added via plugins. A
manual setup of solr is required then. It has been added with basic
support.

Closes: #1540

modules/webapp/src/main/elm/Data/Language.elm

@@ -32,6 +32,7 @@ type Language
     | Japanese
     | Hebrew
     | Hungarian
+    | Lithuanian
 
 
 fromString : String -> Maybe Language
@@ -90,6 +91,9 @@ fromString str =
     else if str == "hun" || str == "hu" || str == "hungarian" then
         Just Hungarian
 
+    else if str == "lit" || str == "lt" || str == "lithuanian" then
+        Just Lithuanian
+
     else
         Nothing
 
@@ -151,6 +155,9 @@ toIso3 lang =
         Hungarian ->
             "hun"
 
+        Lithuanian ->
+            "lit"
+
 
 all : List Language
 all =
@@ -172,4 +179,5 @@ all =
     , Japanese
     , Hebrew
     , Hungarian
+    , Lithuanian
     ]

modules/webapp/src/main/elm/Messages/Data/Language.elm

@@ -71,6 +71,9 @@ gb lang =
         Hungarian ->
             "Hungarian"
 
+        Lithuanian ->
+            "Lithuanian"
+
 
 de : Language -> String
 de lang =
@@ -129,6 +132,9 @@ de lang =
         Hungarian ->
             "Ungarisch"
 
+        Lithuanian ->
+            "Litauisch"
+
 
 fr : Language -> String
 fr lang =
@@ -186,3 +192,6 @@ fr lang =
 
         Hungarian ->
             "Hongrois"
+
+        Lithuanian ->
+            "Lituanien"