Ignore Update

Added files to ignore for IntelliJ IDEA. No need to add these to the
code-base.
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)
Coding Standards Audit: Part 3

Verified all code meets the “Freenet Java Coding Standards”. –
(https://wiki.freenetproject.org/Coding_standards)
Coding Standards Audit: Part 4

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