Fix problem with long metadata category names

[ElDeveloper]

Changed the style to only use the available space inside the tab and nothing
more i. e. there won't be x-axis scroll bars if the category name doesn't fit
inside the tab.

Fixes #246

[emperor-helper]

The test build for this pull request can be found here: http://emperor.colorado.edu/pull_259/make_emperor/

[antgonza]

These changes to the code look fine but I do not think we have a GUI
test for this case (i.e.
http://emperor.colorado.edu/pull_259/make_emperor/), could you add
one? Thank you.

[ElDeveloper]

No problem. I've added a long header name to Fasting_Map_modified.txt, so the examples that use that mapping file, should have that.

On Apr 21, 2014, at 6:47 AM, Antonio Gonzalez notifications@github.com wrote:

These changes to the code look fine but I do not think we have a GUI
test for this case (i.e.
http://emperor.colorado.edu/pull_259/make_emperor/), could you add
one? Thank you.
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Reply to this email directly or view it on GitHub.

[ElDeveloper]

Tests should be passing now.

[ElDeveloper]

Thanks @antgonza!

On Apr 21, 2014, at 1:11 PM, Antonio Gonzalez notifications@github.com wrote:

Merged #259.

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