fix: improve landing page (#71)

- underline all links
- fix a few sentences (minor edits)

app/templates/index.html

@@ -18,6 +18,10 @@
             .faq-row {
                 margin-bottom: 2rem !important;
             }
+
+            a {
+                text-decoration: underline;
+            }
         </style>
         <div class="row">
             <div class="medium-centered small-12 medium-8 columns">
@@ -48,8 +52,7 @@ <h2 class="emphasized-title" id="how-does-open-prices-work">How
                             habits.</p>
                         <p>When possible, we ask contributors to provide a proof
                             of the price, in the form of a photo of the price tag or
-                            receipt. This is to ensure the quality of the data and to
-                            make it easier to ensure data quality.</p>
+                            receipt. This is to make it easier to ensure data quality.</p>
                         <p>If you are providing a receipt as the proof image, it means
                             you agree to submit your consumption basket to Open Prices.
                             We will anonymize the receipt and make it publicly
@@ -90,11 +93,10 @@ <h4 class="emphasized-title" id="what-is-open-food-facts">What
                     <div class="small-12 medium-8 columns">
                         <p>Price information is of paramount importance to
                             understand food systems. It’s a key factor in understanding the
-                            cost
-                            of food, of following a healthy diet, and of food waste.
+                            cost of food and to promote healthier diets.
                             Opening price data is a way to make it easier for
                             researchers, journalists, and citizens to have a better
-                            understanding of the food system.</p>
+                            understanding of how food prices vary geographically and in time.</p>
                     </div>
                 </div>
                 <div class="row faq-row">