application: Fix caching of web overrides SCSS compilation
application: Fix caching of web overrides SCSS compilation

Previously the result of the SCSS compilation was not saved, so the
compilation would be performed every time a webpage was loaded when
using the -w debug option.

https://phabricator.endlessm.com/T23562

endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib