Tuned data panel tabs content alignment to have more consistent UI

[xnike]

I've made a small tunings for UI:

• tabs are on the same level for chart and data panels
• margins between labels on data panel are now the same on chart and data panels

Before:

After:

[codecov-io]

Codecov Report

Merging #250 (cea47f6) into develop (399d713) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@              Coverage Diff              @@
##             develop     #250      +/-   ##
=============================================
- Coverage      70.34%   70.33%   -0.01%     
  Complexity      1519     1519              
=============================================
  Files            146      146              
  Lines           8638     8644       +6     
  Branches        1395     1396       +1     
=============================================
+ Hits            6076     6080       +4     
- Misses          1973     1976       +3     
+ Partials         589      588       -1     

Impacted Files	Coverage Δ	Complexity Δ
...va/com/tagtraum/perf/gcviewer/view/GCDocument.java	33.97% <100.00%> (ø)	23.00 <0.00> (ø)
...tagtraum/perf/gcviewer/view/ModelMetricsPanel.java	96.00% <100.00%> (+0.06%)	5.00 <0.00> (ø)
...gtraum/perf/gcviewer/ctrl/impl/GcSeriesLoader.java	74.15% <0.00%> (-2.25%)	19.00% <0.00%> (ø%)

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[chewiebug]

Hi Nikolay Thank you very much for your contribution! Best regards Jörg