www/py-graphite-web: Update to 1.1.7

• Also switch the port to Django 2.2 (current LTS release) because Django 1.11 is End-of-Life since April, which also drops the support for Python 2.7.

• Do the same for www/py-django-tagging and bump PORTREVISION due changed dependencies. [1]

• Relax the version requirements in setup.py to pave the way for the 0.5.0 update of www/py-django-tagging. [1]

• Remove superfluous '+=' from SUB_LIST and PLIST_SUB and sort variables a bit according to the PHB.

• Add NO_ARCH as there are no architecture relevant files in the package.

Changelogs since 1.1.5:

https://github.com/graphite-project/graphite-web/releases/tag/1.1.7
https://github.com/graphite-project/graphite-web/releases/tag/1.1.6

PR: 245873 245843 [1]
Approved by: maintainer timeout (6+ weeks), Kevin Golding (maintainer) [1]