Review Request 126740: Add a script for optimizing svgs

[Aleix Pol Gonzalez]

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https://git.reviewboard.kde.org/r/126740/
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(Updated Jan. 19, 2016, 7:02 p.m.)


Review request for KDE Frameworks and Plasma.


Changes
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Detected an issue, disabled an optimization: https://github.com/svg/svgo/issues/489

Size-wise the gain is still the same.


Repository: breeze-icons


Description
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Dirk's review (https://git.reviewboard.kde.org/r/126738/) gave me the idea that right now we're serving right away the svg's from inkscape and there's room for improvement, potentially.

This patch just introduces a script that optimizes the svg's using `svgo`.

More could be done, like using gzip files, we can look into that if anyone's interested. In fact, we used to use svgz for the icons, I wonder why that changed. 

This will change the files in-place rather than as a build step, which is what I considered first. The process to run svgo on every file was about 30 minutes to 1h on my system, so I doubt it's really desirable.

A reduced file size is important because it will greatly reduce disk IO, which is a bottle-neck we have.


Diffs (updated)
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  optimize.svg.sh PRE-CREATION 

Diff: https://git.reviewboard.kde.org/r/126740/diff/


Testing
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```
kde-devel at oliver:~/frameworks/breeze-icons (master)$ du -sh icons icons-dark/
32M     icons
32M     icons-dark/

#run the script

kde-devel at oliver:~/frameworks/breeze-icons (master)$ du -sh icons icons-dark/
17M     icons
17M     icons-dark/
```


Thanks,

Aleix Pol Gonzalez

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