[rfc][icedtea-web][itweb-settings] Improve Icedtea-Web cache disk space

[helpcrypto helpcrypto]

Roll, Roll, Roll the Ball...


Im on the opinion that disabled/unusable components should be hidden. Is
this against any usability/accessibility guide? Let me show you some
examples:

-----
limit disabled                      (ie: full-cache)
                                         (Notice spinner/warning is hidden)
jar-compresion-level
location | change | view
-----

-----
limit=0
"No files will be cached. Cached files will be deleted."      (files on
cache should be automatically deleted when changes applied? I Think so)
                                         (Notice I have changed the text to
a -IMHO- more friendly one)
                                         (Notice
compression/location/change/files are hidden)

-----

-----
limit=x
Warning ONLY if needed
jar-compresion-level
location | change | view
-----


I would remove titledborders (disk/location) and put everything under main
panel. Trying to KISS.


Thank you for the changes, hope you dont hate me (yet) for being so
critical.
I'm sure you have much more important fixes to do, so don't hesitate to
stop/resolve when you think so ;)

Regards.
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