Improve config with small tweaks and bug fixes

NOTE: Please close issue #27 (closed) if this is accepted, this patch addresses the issue

NOTE: This patch has not been tested on a machine with dmenu, I am relying on the shellcheck to do its job here so some feedback from the community would be very nice

This patch fixes issue #27 (closed) which states that Wikipedia freaks out when you parse it with jq. I personally verified this was a problem by using the revision 10's link to wikipedia.

On top of that, little quality of life improvements have been made to improve the config. Variables such as DMBROWSER which previously had no use now are used as a general placeholder for "browser". This makes sense since all the configs used brave as the browser anyways. There is also the DMEDITOR which has been defined (as emacs of course)

Aside from that there are very minor tweaks to the spacing and other small stuff like that.