Revert "Replace upstream seafoam theme with my fork."

This reverts commit 10288047.

I think that those JS scripts were needed (show all posts needs that I
think).

Pipfile

@@ -6,10 +6,10 @@ name = "pypi"
 [packages]
 pelican = "*"
 pelican-minification = "*"
+seafoam = "*"
 pelican-image-process = "*"
 pelican-jinja-filters = "*"
 lxml = "*"
-seafoam = {ref = "no_js", git = "https://github.com/adarnimrod/seafoam.git"}
 
 [dev-packages]
 

Pipfile.lock

 {
     "_meta": {
         "hash": {
-            "sha256": "5479dc4bb239101c4b89ef8c7faa605724f7806f1cc2ed78a384b34d8306b7f0"
+            "sha256": "21d3db4873e19e6a466fc53cab4eda15197def11a396825aff8ad465cb74dd72"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -297,8 +297,12 @@
             "version": "==2021.4.4"
         },
         "seafoam": {
-            "git": "https://github.com/adarnimrod/seafoam.git",
-            "ref": "8ce3449fd5ef573ff024eb1d59fb59f939eb8901"
+            "hashes": [
+                "sha256:8b5a7a92fded1898de27a27fe12bb7f7ca2b86f709c5fa2b4af7969c871655ad",
+                "sha256:f86a4b83bdcccae0ce2c71d2a379a44272fdc8c16662e915c52bb86723270330"
+            ],
+            "index": "pypi",
+            "version": "==2.5.0"
         },
         "six": {
             "hashes": [