Raspberry Pi SD card image backup issue

For my Raspberry Pi I have many times done backup from SD card to image file.
But first time when I wanted to actually restore my saved image backup from file on disk to SC card for Raspberry Pi, I expirienced unpleasent suprise:
I couldn’t restore my backup.

AngularJS - Minify resources and Cache Busting

Single page aplication When dealing with Single page application (SPA), it is nessesary to think about minifying those js and css files, and combining those in single files, to speed up loading of app. Also there is another issue with caching. When You release new version, browser won’t load new files, until You go into developer tools, and disable caching. But this is not a solution for production app.