[FIX] theme_bookstore: fix multiple issues in the theme

This commit fixes multiples issues in the theme:

- Wording
- Shapes that should appear only in the configurator
- Useless xpaths
- Font bug in Firefox (-> texts have been outlined in the svg)

task-4221731

closes odoo/design-themes#977

X-original-commit: f6012ce86e
Signed-off-by: Soukéina Bojabza (sobo) <sobo@odoo.com>

theme_bookstore/views/snippets/s_cover.xml

@@ -4,7 +4,7 @@
 <template id="s_cover" inherit_id="website.s_cover">
     <!-- Section -->
     <xpath expr="//section" position="attributes">
-        <attribute name="class" add="oe_img_bg o_full_screen_height" remove="parallax s_parallax_is_fixed bg-black-50" separator=" "/>
+        <attribute name="class" add="oe_img_bg o_full_screen_height" remove="parallax s_parallax_is_fixed" separator=" "/>
         <attribute name="data-scroll-background-ratio">0</attribute>
         <attribute name="data-oe-shape-data">{'shape':'web_editor/Origins/09_001', 'colors':{'c3':'o-color-1'}}</attribute>
         <attribute name="style">background-image: url('/web/image/website.s_cover_default_image'); background-position: 50% 55%;</attribute>
@@ -23,10 +23,6 @@
     <xpath expr="//p[hasclass('lead')]" position="replace" mode="inner">
         <br/>
     </xpath>
-    <!-- Button -->
-    <xpath expr="//a[hasclass('btn')]/t" position="replace" mode="inner">
-        Discover more
-    </xpath>
 </template>
 
 </odoo>