fix sig null bug

Add another JS signature function name regex;

Create LICENSE

problem in settingsFragment; removed bug in log code; inc versionCode

add folder selector; use folder to download and move finally to the c…

…orrect place; fix back on bottomSheet

add thumbnail_url,img; fix formats size bug causing random crash; uni…

…que history

formats layout invisible remove

Added history; changed colors;

redesign with material design 2

add DownloadManager to download directly with the actual title