Gas Optimizations

[code423n4]

HomeFi Contract

The mintNFT() returns a uint value with the projectCount, but this is not used here.
Remove unnecessary return value or use it in createProject() as projectCount replacement for saving gas with local variable.

Disputes Contract

Based in the context, there's no reason why the assertMember() L#172 should be
decleared as public, as it is not used externally anywhere and it's only used
internally in the Disputes contract. It's better to declare it as internal for gas optimizations.

Community Contract

Use of _communityProject.apr instead of _communities[_communityID].projectDetails[_project].apr
in L#692 as stated for gas optimization.

Consider adding a local variable for _msgSender() as follows:
address _sender = _msgSender() in L#503 as done in Project.sol