v2.0.1 fixes and changes

Changed the placement of the symbolic link to /usr/bin. /home/marcelo/.local/bin made no sense since is not a user only install.

Changed functions to reflect the changes.

Running wfxi do delete will also remove the symlink now too.

Fixed get file and get url doing some weird stuff.

Fixed do file download contexts.

Removed JQ message since is not being used for now.

Fixed README.md and mande changes to reflect the script modifications.

Added back super user check.

Implemented the paramenter system to be used with self for a system wide installation of wfxi, inside /usr/local/bin

Implemented the paramenter remove to be used with self to delete wfxi from /home/marcelo/.local/bin and/or /usr/local/bin

Replaced some shorthand commands with theirs more descriptive ones

Added some messages to the dot desktop file creation process.

Directed tee output to /dev/null to not show watefox.desktop file contents on the screen.

Removed --verbose from tar line and when rm is removing the /opt/waterfox folder. Too much shown on the screen and makes the decompression process slower on various terminals

Minor renames and refactors