Updated to v5

+ added selecting in browsing in structure (up, down, home, end, enter). Filter compatible!
* help updated
+ added load images via PHP (IGNORE_PERM in settings) 
* fix resizing + added max-width resizing
* fix open img in fullscreen (opened twice)
+ prepare load txt //@TEXT               
+ prepare filter in file loading //@TEXT
+ prepare load files from another folder
* change unfocus from input filter
* fix load empty dir
* fix load dir, where is one file/folder
+ added natcasesort (sort by name case insensitive)