add title to buttons

Author: jwcooper

blinka.html

@@ -9,18 +9,18 @@ <h1>Blinka</h1>
   <div class="downloads-inputs">
     <div class="downloads-search">
       <label class="search-wrapper">
-        <input type="text" id="search" placeholder="Search for CircuitPython boards" />
+        <input aria-label="Search for Blinka boards" type="text" id="search" placeholder="Search for Blinka boards" />
       </label>
     </div>
     <div class="downloads-filter">
-      <button class="filter"><i class="fas fa-sliders-h"></i></button>
+      <button class="filter" title="Filter Boards"><i class="fas fa-sliders-h"></i></button>
     </div>
     <div class="downloads-filter-tags">
     </div>
   </div>
   <div class="downloads-filter-content">
     <div class="filter-buttons">
-      <button class="save-changes"><i class="fas fa-times"></i></button>
+      <button class="save-changes" title="Close and Save Changes"><i class="fas fa-times"></i></button>
     </div>
     <div>
       <div class="manufacturers">

downloads.html

@@ -13,14 +13,14 @@ <h1>Downloads</h1>
       </label>
     </div>
     <div class="downloads-filter">
-      <button class="filter"><i class="fas fa-sliders-h"></i></button>
+      <button class="filter" title="Filter Boards"><i class="fas fa-sliders-h"></i></button>
     </div>
     <div class="downloads-filter-tags">
     </div>
   </div>
   <div class="downloads-filter-content">
     <div class="filter-buttons">
-      <button class="save-changes"><i class="fas fa-times"></i></button>
+      <button class="save-changes" title="Close and Save Changes"><i class="fas fa-times"></i></button>
     </div>
     <div>
       <div class="manufacturers">