Add PHPDocs generated by ChatGPT,

add additional clarification to some functions,
add addNewsComment function and API, currently untested and not implemented in the client,
fix a bunch of stuff that PHPStorm pointed out

assets/style.css

@@ -371,11 +371,11 @@ div#articleslist>article{
 }
 
 .positive {
-    color: green;
+    color: #008000;
 }
 
 .negative {
-    color: red;
+    color: #ff0000;
 }
 
 .neutral {
@@ -390,12 +390,12 @@ div#articleslist>article{
 }
 
 .visual_hover.meme_upvote {
-    --pico-background-color: green;
+    --pico-background-color: #008000;
     --pico-border-color: unset;
 }
 
 .visual_hover.meme_downvote {
-    --pico-background-color: red;
+    --pico-background-color: #ff0000;
     --pico-border-color: unset;
 }