Ignore Update

Updates .gitignore to ignore config files for IntelliJ IDEA.
Coding Standards Audit: Part 1

Verified all code meets the “Freenet Java Coding Standards”. –
(https://wiki.freenetproject.org/Coding_standards)
Coding Standards Audit: Part 2

Verified all code meets the “Freenet Java Coding Standards”. –
(https://wiki.freenetproject.org/Coding_standards)