imagecache插件支持强制下载，不使用缓存。页面修改点击重新加载时强制下载

show-server/src/main/webapp/biz/js/plugins/imagecache.js

@@ -19,6 +19,6 @@ require(["domReady!","wadeMobile","jcl","tap"], function(doc,WadeMobile,$) {
		$("#pic3").attr("src", "");
		WadeMobile.setImageWithURL(url,function(path) {
			$("#pic3").attr("src",path);
		});
		},true);
	});
});

show-server/src/main/webapp/ipu/js/mobile/expand-mobile.js

@@ -430,9 +430,9 @@ define(["require","jcl"],function(require,Wade) {
			},gesturedetector:function(callback){
				storageCallback("gesturedetector",callback);
				execute("gesturedetector",[]);
			},setImageWithURL:function(url,callback){
			},setImageWithURL:function(url,callback,forceDownload){
				storageCallback("setImageWithURL",callback);
				execute("setImageWithURL",[url]);
				execute("setImageWithURL",[url,forceDownload]);
			},clearImageCache:function(callback){
				storageCallback("clearImageCache",callback);
				execute("clearImageCache",[]);