Let Popup listen also to 'moveend' in order to fit on screen after a …

…resize is detected.

(incidentally, this also makes it impossible to pan a popup out of the view, maybe a resize should simply emit a 'vewreset' and avoid listening of 'moveend')

src/layer/Popup.js

@@ -39,6 +39,7 @@ L.Popup = L.Class.extend({
 		map._panes.popupPane.appendChild(this._container);
 
 		map.on('viewreset', this._updatePosition, this);
+		map.on('moveend', this._updatePosition, this);
 
 		if (L.Browser.any3d) {
 			map.on('zoomanim', this._zoomAnimation, this);
@@ -72,6 +73,7 @@ L.Popup = L.Class.extend({
 
 		map.off({
 			viewreset: this._updatePosition,
+			moveend: this._updatePosition,
 			preclick: this._close,
 			zoomanim: this._zoomAnimation
 		}, this);
@@ -140,8 +142,6 @@ L.Popup = L.Class.extend({
 		this._updatePosition();
 
 		this._container.style.visibility = '';
-
-		this._adjustPan();
 	},
 
 	_updateContent: function () {
@@ -203,6 +203,8 @@ L.Popup = L.Class.extend({
 		//Bottom position the popup in case the height of the popup changes (images loading etc)
 		this._container.style.bottom = this._containerBottom + 'px';
 		this._container.style.left = this._containerLeft + 'px';
+
+		this._adjustPan();
 	},
 
 	_zoomAnimation: function (opt) {