Fix improper header styling, remove shopping tab links

The header template was using Google's classes for the "Whoogle" logo,
which meant keeping up with their list of colors used in the logo. The
template was updated to only ever use the Whoogle logo color.
Accordingly, the logo specific styling in filter.py was removed, since
it is no longer needed.

Also removes all links to the shopping tab, as it seems that the
majority of the links to items are Google specific links (usually
google.com/aclk links without any discernible param for determining the
true location for the link). The shopping page should be addressed
separately with unique filtering/formatting. Further tracking of this
task will be followed in #136.

app/filter.py

@@ -31,9 +31,6 @@ class Filter:
 
     def reskin(self, page):
         # Aesthetic only re-skinning
-        page = page.replace('>G<', '>Wh<')
-        pattern = re.compile('4285f4|ea4335|fbcc05|34a853|fbbc05', re.IGNORECASE)
-        page = pattern.sub('685e79', page)
         if self.dark:
             page = page.replace('fff', '000').replace('202124', 'ddd').replace('1967D2', '3b85ea')
 
@@ -56,6 +53,7 @@ class Filter:
         self.fix_question_section()
         self.update_styling(soup)
 
+
         for img in [_ for _ in soup.find_all('img') if 'src' in _.attrs]:
             self.update_element_src(img, 'image/png')
 
@@ -147,7 +145,9 @@ class Filter:
     def update_link(self, link):
         # Replace href with only the intended destination (no "utm" type tags)
         href = link['href'].replace('https://www.google.com', '')
-        if '/advanced_search' in href:
+        if '/advanced_search' in href or 'tbm=shop' in href:
+            # TODO: The "Shopping" tab requires further filtering (see #136)
+            # Temporarily removing all links to that tab for now.
             link.decompose()
             return
         elif self.new_tab:

app/templates/header.html

@@ -5,9 +5,7 @@
                 <a class="logo-link mobile-logo"
                    href="/"
                    style="display:flex; justify-content:center; align-items:center; color:#685e79; font-size:18px; ">
-                    <span class="V6gwVd">Wh</span><span class="iWkuvd">o</span><span class="cDrQ7">o</span><span
-                        class="V6gwVd">g</span><span class="ntlR9">l</span><span
-                        class="iWkuvd tJ3Myc">e</span>
+                    <span style="color: #685e79">Whoogle</span>
                 </a>
                 <div class="H0PQec" style="width: 100%;">
                     <div class="sbc esbc autocomplete">
@@ -27,9 +25,7 @@
     <header>
         <div class="logo-div">
             <a class="logo-link" href="/">
-                <span class="V6gwVd logo-letter">Wh</span><span class="iWkuvd logo-letter">o</span><span
-                    class="cDrQ7 logo-letter">o</span><span class="V6gwVd logo-letter">g</span><span
-                    class="ntlR9 logo-letter">l</span><span class="iWkuvd tJ3Myc logo-letter">e</span>
+                <span style="color: #685e79">Whoogle</span>
             </a>
         </div>
         <div class="search-div">