Create new aramaic on website

This MR makes the Neo-Aramaric texts available via the back end.

To test locally:

• check out branch and build Docker image with all necessary envs
• import textgrid:40xnp (the neo-aramaic collection)
• view at /textapi/ahiqar/neo-aramaic/collection.json

exist-app/modules/motifs-expansion.xqm

@@ -36,7 +36,7 @@ as node()* {
             return
                 switch ($pi("type"))
                     case "start" return
-                        let $md5 := "md5" || ($node => serialize() => util:hash("md5") => substring(1, 10))
+                        let $md5 := "md5" || (concat(serialize($node), util:random()) => util:hash("md5") => substring(1, 20))
                         return
                             element {QName("http://ahiqar.uni-goettingen.de/ns/motifs", $pi("comment"))} {
                                 attribute type {"start"},