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

[Lukasz Dracz]

Hello,

> Hmm...Is not exactly what I was thinking.
> If you find the following layout better, I'll be happy if its applied.
> 
> PS: I think you messed the hide/show stuff...and with limit unchecked I
> cant see the jar compression either!

For me the hide/show was working, but after some further testing I found that when initializing the settings it would not show the proper setup based on what values you had saved. I believe I fixed it, if you still have an issue I'll look into it more. 

> --------------------
> Java stores application data in cache for faster execution the next time
> you run it.
> 
> (Notice theres not tittledborder!)

Yeah good idea. I also got rid of the horizontal line.

> <check> Limit cache usage. Maximum cache in MB: <spinner>
> ("Maximum cache in MB"+spinner will be hidden if limit unchecked)
> <warning>
> (If limit=0 or limit>available, warning goes here, otherwise hidden)
> Jar compression level
> <select>                                                            (this
> must be hidden only if limit=0)
> Location where temporary files are
> stored:                                            (this
> label+<path>+<change>+<view files> are hidden only if limit=0)
> <path> <change> <view files>
> --------------------

Yeah this layout looks much better.

Also I changed the max from 2,147,483,648 to 2,147,483,647 since I found that value was actually out of bounds for the deployment config cache size.

Thank you,
Lukasz Dracz 
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