Added jEdit

jEdit is a mature programmer's text editor with hundreds (counting the
time developing plugins) of person-years of development behind it.

While jEdit beats many expensive development tools for features and
ease of use, it is released as free software with full source code,
provided under the terms of the GPL 2.0.

The jEdit core, together with a large collection of plugins is
maintained by a world-wide developer team.
Merge pull request #3117 from alebcay/jedit

Added jEdit