Fix + format date/time values across entire site

-Added a new client-side library for date/time formatting: Luxon v1.26.0
-Added new date/time settings for display format, timezone (utc or local) and an option to enable alternate timezone tooltips
-All date/time values are now formatted via Luxon and displayed according to the new configurable settings
-All markets now return Trade History timestamp values as unix timestamp values formatted in seconds

lib/markets/altmarkets.js

@@ -65,7 +65,7 @@ function get_trades(coin, exchange, cb) {
               price: body[i]['price'],
               quantity: body[i]['amount'],
               total: body[i]['total'],
-              timestamp: new Date(body[i]['created_at'] * 1000).toUTCString()
+              timestamp: body[i]['created_at']
             };
 
             trades.push(trade);

lib/markets/bittrex.js

@@ -53,7 +53,7 @@ function get_trades(coin, exchange, cb) {
             ordertype: body[i]['takerSide'],
             price: body[i]['rate'],
             quantity: body[i]['quantity'],
-            timestamp: body[i]['executedAt']
+            timestamp: parseInt(new Date(body[i]['executedAt']).getTime()/1000)
           };
 
           trades.push(trade);

lib/markets/bleutrade.js

@@ -41,7 +41,7 @@ function get_trades(coin, exchange, cb) {
               price: body.result[i]['Price'],
               quantity: body.result[i]['Quantity'],
               total: body.result[i]['Total'],
-              timestamp: body.result[i]['TimeStamp']
+              timestamp: parseInt(new Date(body.result[i]['TimeStamp']).getTime()/1000)
             };
 
             trades.push(trade);

lib/markets/crex.js

@@ -39,7 +39,7 @@ function get_trades(coin, exchange, cb) {
           ordertype: body[i].side,
           quantity: body[i].volume,
           price: body[i].price,
-          timestamp: body[i].timestamp
+          timestamp: parseInt(new Date(body[i].timestamp).getTime()/1000)
         };
 
         trades.push(trade);

lib/markets/poloniex.js

@@ -40,7 +40,7 @@ function get_trades(coin, exchange, cb) {
             price: body[i]['rate'],
             quantity: body[i]['amount'],
             total: body[i]['total'],
-            timestamp: body[i]['date']
+            timestamp: parseInt(new Date(body[i]['date'] + 'Z').getTime()/1000)
           };
 
           trades.push(trade);

lib/markets/stex.js

@@ -37,7 +37,7 @@ function get_trades(coin, exchange, stex_id, cb) {
           ordertype: body.data[i].type,
           price: body.data[i].price,
           quantity: body.data[i].amount,
-          timestamp: new Date(body.data[i].timestamp * 1000).toUTCString()
+          timestamp: body.data[i].timestamp
         };
 
         trades.push(trade);

lib/markets/yobit.js

@@ -43,7 +43,7 @@ function get_trades(coin, exchange, cb) {
             ordertype: (body[coin + '_' + exchange][i]['type'].toLowerCase() == 'bid' ? 'BUY' : 'SELL'),
             price: body[coin + '_' + exchange][i].price,
             quantity: body[coin + '_' + exchange][i].amount,
-            timestamp: new Date(body[coin + '_' + exchange][i].timestamp * 1000).toUTCString()
+            timestamp: body[coin + '_' + exchange][i].timestamp
           };
 
           trades.push(trade);

lib/settings.js

@@ -97,6 +97,21 @@ exports.shared_pages = {
   //       NOTE: The path root is /public
   //             The optimum logo size is 128x128 as the image will be forced to 128px high when displayed
   "logo": "/img/logo.png",
+  // date_time: a collection of settings that pertain to the date and time values displayed in the explorer
+  "date_time": {
+    // display_format: The format to use when displaying date/time values
+    //                 Date/time values are formatted using the Luxon library and must follow the correct syntax (read more: https://moment.github.io/luxon/docs/manual/formatting.html#table-of-tokens)
+    //                 Ex: LLL dd, yyyy HH:mm:ss ZZZZ = May 27, 2019 22:04:11 UTC
+    "display_format": "LLL dd, yyyy HH:mm:ss ZZZZ",
+    // timezone: All dates and times are stored as UTC dates and can either be displayed in UTC format or else they can be displayed in the local timezone according to a user's web browser settings
+    //           valid options: utc or local
+    "timezone": "utc",
+    // enable_alt_timezone_tooltips: Determine if dates and times should have a mouse-over tooltip which displays an alternate timezone value
+    //                               If set to true and the "shared_pages.date_time.timezone" setting is set to "utc" then enabling this option will display date/time tooltips in the local browser's timezone
+    //                               If set to true and the "shared_pages.date_time.timezone" setting is set to "local" then enabling this option will display date/time tooltips in the UTC timezone
+    //                               If set to false, no tooltips will be displayed for any date/time values
+    "enable_alt_timezone_tooltips": false
+  },
   // table_header_bgcolor: Change the background color of all table headers
   //                       valid options: light, dark or leave blank ( "" ) for default colors
   "table_header_bgcolor": "",