Adjust css errors.

[jkmarx]

• added pointer classes
• adjust padding on rows

[codecov]

Codecov Report

Merging #2745 into develop will decrease coverage by 0.96%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #2745      +/-   ##
===========================================
- Coverage    57.17%   56.21%   -0.97%     
===========================================
  Files          411      411              
  Lines        26163    25692     -471     
  Branches      1250     1250              
===========================================
- Hits         14960    14443     -517     
- Misses       11203    11249      +46

Impacted Files	Coverage Δ
...ager/management/commands/process_metadata_table.py	0% <0%> (-54.55%)	⬇️
refinery/file_store/tasks.py	30.5% <0%> (-8.5%)	⬇️
refinery/file_store/models.py	71.87% <0%> (-7.59%)	⬇️
...nery/data_set_manager/single_file_column_parser.py	79.65% <0%> (-1.17%)	⬇️
refinery/data_set_manager/tasks.py	43.23% <0%> (-0.88%)	⬇️
refinery/data_set_manager/tests.py	99.76% <0%> (-0.08%)	⬇️

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