Fix Help Window and Minor Issues

[eugenetangkj]

Main Changes

• Update help window to reflect latest command information
• Fix capitalisation for Status
• Remove updating of right UI panel for copy and refined copied message

Issues

This PR fixes #116.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.02 ⚠️

Comparison is base (6e1945a) 77.79% compared to head (b81945a) 77.77%.

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #132      +/-   ##
============================================
- Coverage     77.79%   77.77%   -0.02%     
  Complexity      579      579              
============================================
  Files            79       79              
  Lines          1684     1683       -1     
  Branches        188      188              
============================================
- Hits           1310     1309       -1     
  Misses          314      314              
  Partials         60       60              

Impacted Files	Coverage Δ
...a/seedu/internship/logic/commands/CopyCommand.java	100.00% <ø> (ø)
...java/seedu/internship/model/internship/Status.java	93.75% <ø> (ø)
.../main/java/seedu/internship/model/InternBuddy.java	84.84% <100.00%> (ø)

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[potty10]

LGTM!