Use isSilent flag in SQL migration templates

Previously setting the db-migrate instance isSilent flag did not prevent the printing of the SQL migration files
This causes a huge amount of noise in the output and there was no way to prevent this when calling the 
up()-function.

Author: gadgetmies

lib/template.js

@@ -105,7 +105,7 @@ Template.prototype.sqlFileLoaderTemplate = function () {
     '  return new Promise( function( resolve, reject ) {',
     "    fs.readFile(filePath, {encoding: 'utf-8'}, function(err,data){",
     '      if (err) return reject(err);',
-    "      console.log('received data: ' + data);",
+    "      if (db.log.isSilent !== true) console.log('received data: ' + data);",
     '',
     '      resolve(data);',
     '    });',
@@ -122,7 +122,7 @@ Template.prototype.sqlFileLoaderTemplate = function () {
     '  return new Promise( function( resolve, reject ) {',
     "    fs.readFile(filePath, {encoding: 'utf-8'}, function(err,data){",
     '      if (err) return reject(err);',
-    "      console.log('received data: ' + data);",
+    "      if (db.log.isSilent !== true) console.log('received data: ' + data);",
     '',
     '      resolve(data);',
     '    });',
@@ -171,7 +171,7 @@ Template.prototype.sqlFileLoaderIgnoreOnInitTemplate = function () {
     '    return new Promise( function( resolve, reject ) {',
     "       fs.readFile(filePath, {encoding: 'utf-8'}, function(err,data){",
     '         if (err) return reject(err);',
-    "         console.log('received data: ' + data);",
+    "         if (db.log.isSilent !== true) console.log('received data: ' + data);",
     '',
     '         resolve(data);',
     '       });',
@@ -181,7 +181,7 @@ Template.prototype.sqlFileLoaderIgnoreOnInitTemplate = function () {
     '    });',
     '  }',
     '  else {',
-    "   console.log('ignoring on init: ' + filePath)",
+    "   if (db.log.isSilent !== true) console.log('ignoring on init: ' + filePath)",
     '   return null;',
     '  }',
     '};',
@@ -193,7 +193,7 @@ Template.prototype.sqlFileLoaderIgnoreOnInitTemplate = function () {
     '  return new Promise( function( resolve, reject ) {',
     "    fs.readFile(filePath, {encoding: 'utf-8'}, function(err,data){",
     '      if (err) return reject(err);',
-    "      console.log('received data: ' + data);",
+    "      if (db.log.isSilent !== true) console.log('received data: ' + data);",
     '',
     '      resolve(data);',
     '    });',