add mempool reffresh time to mempool.html

src/page.h

@@ -826,7 +826,8 @@ namespace xmreg
             // initalise page tempate map with basic info about mempool
             mstch::map context {
                     {"mempool_size"          , total_no_of_mempool_tx}, // total no of mempool txs
-                    {"show_cache_times"      , show_cache_times}
+                    {"show_cache_times"      , show_cache_times},
+                    {"mempool_refresh_time"  , MempoolStatus::mempool_refresh_time}
             };
 
             context.emplace("mempooltxs" , mstch::array());

src/templates/mempool.html

@@ -1,7 +1,7 @@
 <h2 style="margin-bottom: 0px">
    Memory pool
 </h2>
-<h4 style="font-size: 14px; margin-top: 0px">(no of txs: {{mempool_size}}, size: {{mempool_size_kB}} kB)</h4>
+<h4 style="font-size: 14px; margin-top: 0px">(no of txs: {{mempool_size}}; size: {{mempool_size_kB}} kB; refreshed every {{ mempool_refresh_time }} seconds)</h4>
 <div class="center">
     
       <table class="center" style="width:80%">

src/templates/search_results.html

@@ -3,7 +3,7 @@
 
   {{#no_results}}
     <h4 style="margin-bottom:2px">Nothing in the blockchain has been found that matches the search term :-(</h4>
-    <h5 style="margin:2px">Note: there might be 10 block delay between what can be searchable (e.g., key images)</h5>
+    <h5 style="margin:2px">Note: there might be some delay when newest txs become searchable</h5>
   {{/no_results}}
 
    {{#to_many_results}}