Refactor code completion, container layouts, and webkit settings

- Renamed alt_provider.py file under words completer
- Improve word completion matching logic with character validation
- Change container orientations (header→vertical, left/right→horizontal)
- Add separators to all container edges
- Refactor webkit UI loading into separate load_url/load_context_base_path methods
- Add comprehensive webkit browser-like settings

plugins/code/completers/words_completer/provider.py

@@ -18,7 +18,7 @@ class Provider(GObject.GObject, GtkSource.CompletionProvider):
         This is a Words Completion Provider.
         # NOTE: used information from here --> https://warroom.rsmus.com/do-that-auto-complete/
     """
-    # __gtype_name__ = 'WordsCompletionProvider'
+    __gtype_name__ = 'WordsCompletionProvider'
 
     def __init__(self):
         super(Provider, self).__init__()
@@ -37,6 +37,16 @@ class Provider(GObject.GObject, GtkSource.CompletionProvider):
 
         word = self.response_cache.get_word(context)
         if not word or len(word) < 2: return False
+
+        iter = self.response_cache.get_iter_correctly(context)
+        iter.backward_char()
+        ch = iter.get_char()
+        # NOTE: Look to re-add or apply supprting logic to use spaces
+        # As is it slows down the editor in certain contexts...
+        # if not (ch in ('_', '.', ' ') or ch.isalnum()):
+        if not (ch in ('_', '.') or ch.isalnum()):
+            return False
+
         return True
 
     def do_get_priority(self):