Fix reported pathing issues when using Import

[yhanyi]

Fixes #261 #276 #279

Addresses path related issues when using Import or ImportConsult as reported by testers.

[codecov]

Codecov Report

Attention: Patch coverage is 86.20690% with 4 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...ic/commands/consultation/ImportConsultCommand.java	83.33%	2 Missing and 1 partial ⚠️
...va/seedu/address/logic/commands/ImportCommand.java	90.90%	0 Missing and 1 partial ⚠️

Files with missing lines	Coverage Δ	Complexity Δ
...va/seedu/address/logic/commands/ImportCommand.java	96.03% <90.90%> (-0.84%)	29.00 <4.00> (+1.00)	⬇️
...ic/commands/consultation/ImportConsultCommand.java	92.92% <83.33%> (+10.39%)	34.00 <5.00> (+9.00)

[notnotmax]

Just adding some reasoning for why I think this should be allowed.

The reasonable correct behavior is arguably for import and export to have the same base file paths.