Update Raintale GUI installer to support newest version of Django

[shawnmjones]

Wooey does not currently support Django 3.2.5 and the Raintale GUI installer downgrades Django to 3.1.8 so that our system will work. The author of Wooey assures me that a fix will be included in the next Wooey version. Once that version is available, we need to remove the lines downgrading Django from our installer.

raintale/raintale-gui/install-gui.sh

Lines 73 to 86 in a2e219a

	if [ $INSTALL_ALL -eq 0 ]; then
	echo "installing specific Django version"
	pip install Django==3.1.8 # see https://github.com/wooey/Wooey/issues/334
	else
	pip freeze | grep Django==3.1.8 > /dev/null
	status=$?
	if [ $status -eq 0 ]; then
	echo "Django already installed, skipping install of Django"
	else
	echo "installing specific Django version"
	pip install Django==3.1.8 # see https://github.com/wooey/Wooey/issues/334
	fi
	fi

[shawnmjones]

Since this relies upon an upstream change that we have no control over, I am removing it from the finished IIPC 2021 project.