Fix: Corrected Load and Reload button logic for Issue #675

[sharmajatinjs]

Hi! I fixed the issue where the Load and Reload buttons were not working correctly.

Changes:

1. Changed load_brain to use restart_simulation() for a full reset (as requested).
2. Connected the Reload button to reset_simulation() to correctly reset positions without killing the simulator.

Fixes #675

[Amglega]

Hi @sharmajatinjs, I'm sorry for the delay in responding to your pull request. First of all, I'd like to thank you for your interest in this project. We just updated it last week with a new version to enable the use without ROS, since there are a lot of changed files, and from what i have seen in your branch there are also some files that have been deleted like the "resources" directory and its contents. Try to rebase your branch with the last version to avoid file collisions and to merge without many conflicts.