Update UG (fix inaccurate commands, improve ordering)

[mjgui]

Just an initial PR to improve the UG

Other potential things to do

• Update the command summary table (and potentially move it to the top)
• Add hyperlinks to navigate around the document
• Improve the language at the top of the User Guide
• Improve based on CS2101 feedback

Fixes

Fixes #168
Fixes #163
Fixes #161
Fixes #158
Fixes #157
Fixes #153
Fixes #152
Fixes #151
Fixes #149
Fixes #148
Fixes #147
Fixes #146
Fixes #144
Fixes #142
Fixes #141
Fixes #137
Fixes #135
Fixes #130

Partially fixes but does not close #132 (confusing error messages)

[codecov-commenter]

Codecov Report

Base: 39.13% // Head: 39.56% // Increases project coverage by +0.42% 🎉

Coverage data is based on head (59b0da7) compared to base (af503b5).
Patch has no changes to coverable lines.

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #128      +/-   ##
============================================
+ Coverage     39.13%   39.56%   +0.42%     
- Complexity      457      512      +55     
============================================
  Files           143      147       +4     
  Lines          2619     2861     +242     
  Branches        327      371      +44     
============================================
+ Hits           1025     1132     +107     
- Misses         1529     1654     +125     
- Partials         65       75      +10     

Impacted Files	Coverage Δ
...in/java/seedu/address/logic/parser/ParserUtil.java	55.05% <0.00%> (-8.59%)	⬇️
...in/java/seedu/address/storage/JsonAdaptedTeam.java	84.84% <0.00%> (-7.66%)	⬇️
...ain/java/seedu/address/model/team/Description.java	66.66% <0.00%> (ø)
...edu/address/logic/parser/DescriptionConverter.java	25.00% <0.00%> (ø)
...c/main/java/seedu/address/model/team/TeamName.java	72.72% <0.00%> (ø)
.../seedu/address/logic/parser/TeamNameConverter.java	25.00% <0.00%> (ø)
src/main/java/seedu/address/model/team/Team.java	43.52% <0.00%> (+1.69%)	⬆️
.../seedu/address/logic/commands/EditTeamCommand.java	18.47% <0.00%> (+2.11%)	⬆️
...a/seedu/address/logic/commands/SetTeamCommand.java	12.50% <0.00%> (+2.50%)	⬆️
...eedu/address/logic/commands/DeleteTeamCommand.java	12.50% <0.00%> (+2.50%)	⬆️
... and 2 more

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[marcuspang]

UG Bugs

• Update find member description to indicate that the name and email fields are mutually exclusive? I feel this shouldn't be the case (see [PE-D][Tester A] Unclear UG for Find members : find member #162)
• Add aliases for all commands ([PE-D][Tester A] Program exited for typing some commands not shown in User Guide #159)
• Command summary ([PE-D][Tester A] Invalid Command Summary in User Guide #155)
• We should stress that quotes are not necessary for date time fields at the top, many of the issues stem from this inconsistency with other fields
• Missing documentation for all xxx persons commands ([PE-D][Tester A] Do not have any documentation on how to add person #138)

Revoke approval

[marcuspang]

Remaining issues will be addressed in #84

[Devanshshah1309]

Preliminary changes LGTM. Approving since the rest of the changes will be made in a separate PR (as discussed internally)