Update UI and implement manual switching of tab

[vanGoghhh]

Fixes #209 #201

[codecov-io]

Codecov Report

Merging #224 into master will decrease coverage by 0.29%.
The diff coverage is 8.00%.

@@             Coverage Diff              @@
##             master     #224      +/-   ##
============================================
- Coverage     76.05%   75.76%   -0.30%     
  Complexity      912      912              
============================================
  Files           129      130       +1     
  Lines          2573     2583      +10     
  Branches        331      331              
============================================
  Hits           1957     1957              
- Misses          517      527      +10     
  Partials         99       99              

Impacted Files	Coverage Δ	Complexity Δ
src/main/java/seedu/address/ui/JobCard.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...rc/main/java/seedu/address/ui/JobDetailedView.java	0.00% <0.00%> (ø)	0.00 <0.00> (?)
src/main/java/seedu/address/ui/JobListPanel.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
src/main/java/seedu/address/ui/MainWindow.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
src/main/java/seedu/address/ui/PersonCard.java	0.00% <ø> (ø)	0.00 <0.00> (ø)
...a/seedu/address/logic/commands/ListJobCommand.java	100.00% <100.00%> (ø)	2.00 <0.00> (ø)
...eedu/address/logic/commands/ListPersonCommand.java	100.00% <100.00%> (ø)	2.00 <0.00> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 912b7b7...3e4ad02. Read the comment docs.

[g-erm]

LGTM good work! 🥇