Refactor main.js: controllers.playback.skip() (#706)

* Fixes bug with Step Forward/Backward commands not working

* Fix 'invalid torrent identifier' error

renderer/main.js

@@ -181,11 +181,13 @@ const dispatchHandlers = {
   'toggleSelectTorrent': (infoHash) => controllers.torrentList.toggleSelectTorrent(infoHash),
   'openTorrentContextMenu': (infoHash) => controllers.torrentList.openTorrentContextMenu(infoHash),
 
-  'startTorrentingSummary': startTorrentingSummary,
+  'startTorrentingSummary': (torrentSummary) =>
+    controllers.torrentList.startTorrentingSummary(torrentSummary),
 
   // Playback
   'playFile': (infoHash, index) => controllers.playback.playFile(infoHash, index),
   'playPause': () => controllers.playback.playPause(),
+  'skip': (time) => controllers.playback.skip(time),
   'skipTo': (time) => controllers.playback.skipTo(time),
   'changePlaybackRate': (dir) => controllers.playback.changePlaybackRate(dir),
   'changeVolume': (delta) => controllers.playback.changeVolume(delta),
@@ -317,7 +319,7 @@ function escapeBack () {
 function resumeTorrents () {
   state.saved.torrents
     .filter((torrentSummary) => torrentSummary.status !== 'paused')
-    .forEach((torrentSummary) => startTorrentingSummary(torrentSummary))
+    .forEach((torrentSummary) => controllers.torrentList.startTorrentingSummary(torrentSummary))
 }
 
 function isTorrent (file) {
@@ -333,19 +335,6 @@ function getTorrentSummary (torrentKey) {
   return TorrentSummary.getByKey(state, torrentKey)
 }
 
-// Starts downloading and/or seeding a given torrentSummary. Returns WebTorrent object
-function startTorrentingSummary (torrentSummary) {
-  var s = torrentSummary
-
-  // Backward compatibility for config files save before we had torrentKey
-  if (!s.torrentKey) s.torrentKey = state.nextTorrentKey++
-
-  // Use Downloads folder by default
-  if (!s.path) s.path = state.saved.prefs.downloadPath
-
-  ipcRenderer.send('wt-start-torrenting', s)
-}
-
 function torrentInfoHash (torrentKey, infoHash) {
   var torrentSummary = getTorrentSummary(torrentKey)
   console.log('got infohash for %s torrent %s',