Add spanish as an example

Adding a new language without nlp requires now only to fill out the
pieces:

- define a list of month names to support date recognition
- add it to joex' dockerfile to be available for tesseract
- update the solr migration/field definitions
- update the elm file so it shows up on the client

modules/fts-solr/src/main/scala/docspell/ftssolr/Field.scala

@@ -25,6 +25,7 @@ object Field {
   val content_en     = Field("content_en")
   val content_fr     = Field("content_fr")
   val content_it     = Field("content_it")
+  val content_es     = Field("content_es")
   val itemName       = Field("itemName")
   val itemNotes      = Field("itemNotes")
   val folderId       = Field("folder")
@@ -39,6 +40,8 @@ object Field {
         Field.content_fr
       case Language.Italian =>
         Field.content_it
+      case Language.Spanish =>
+        Field.content_es
     }
 
   implicit val jsonEncoder: Encoder[Field] =

modules/fts-solr/src/main/scala/docspell/ftssolr/SolrQuery.scala

@@ -41,6 +41,7 @@ object SolrQuery {
             Field.content_en,
             Field.content_fr,
             Field.content_it,
+            Field.content_es,
             Field.itemName,
             Field.itemNotes,
             Field.attachmentName

modules/fts-solr/src/main/scala/docspell/ftssolr/SolrSetup.scala

@@ -69,6 +69,14 @@ object SolrSetup {
             solrEngine,
             "Add content_it field",
             addContentItField.map(_ => FtsMigration.Result.reIndexAll)
+          ),
+          FtsMigration[F](
+            8,
+            solrEngine,
+            "Add content_es field",
+            addTextField(Some(Language.Spanish))(Field.content_es).map(_ =>
+              FtsMigration.Result.reIndexAll
+            )
           )
         )