Re-apply part of r559792 (INDEX and bulk -a OK)

With hat:	portmgr

Revert r559792 to unbreak INDEX and bulk -a
It seems a lot of reverse dependencies were missed

With hat:	portmgr

Remove most expired ports that depend on Python 2.7:

Exceptions are:
- mail/mailman, our listservers still use it
- www/chromium, solely because of popular demand,
  upstream is (slowly) working on porting it to Python 3
- ports that have actual patches for Python 3 against
  them (Cinnamon and a few unrelated other ports)
- llvm70 and qt5-webengine because they seem to have a lot
  of dependencies which need further analysis
- sysutils/uefi-edk2-bhyve because bhyve seems to use them
- python2 and python27 themselves

I'm sure there will be complaints, but the nice thing about
a version control system is that we can revert and adjust things.

Take

Return rea@'s ports to the pool after 19 months of inactivity.

With hat:	portmgr-secretary

Reduce dependency on the python2 metaport

PR:		225752
Submitted by:	Yasuhiro KIMURA

www/trac-*: minor cleanup

- Don't use trac/plugin.mk which is now empty and unneeded
- Add some NO_ARCH'es
- Add/fix some LICENSEs and LICENSE_FILES
- Pet portlint
- Regenerate some patches

Approved by:	portmgr blanket

Remove ${PORTSDIR}/ from dependencies, categories v, w, x, y, and z.

With hat:	portmgr
Sponsored by:	Absolight

- Convert USE_PYTHON to new USES in www/

With hat:	python@

- Remove easy_install dependency
- Convert to PYDISTUTILS_AUTOPLIST
- Bump PORTREVISION to enforce a cleanup for the easy_install references

With hat:	python@
Approved by:	portmgr (implicit)

Convert www to USES=zip

- Stage support

Python cleanup:
- USE_PYTHON* = 2.X -> USE_PYTHON* = 2
- USE_PYTHON* = 2.X+ -> USE_PYTHON* = yes
Reviewed by:	python (mva, rm)
Approved by:	portmgr-lurkers (mat)

Add NO_STAGE all over the place in preparation for the staging support (cat:
www)

- do not directly depend on py-setuptools, use USE_DISTUTILS=easy_install
instead
- bump PORTREVISION because of dependencies change
- trim Makefile header
- remove indefinite article from COMMENT
- limit python version to 2.x
- remove checks for deprecated python versions
- general Makefile clean-up
- move pkg-plist content into Makefile:PLIST_FILES

PR:		173838
Submitted by:	rm (myself)
Approved by:	maintainer timeout (~2 months)

New port: www/trac-tickettemplate

TicketTemplate enable users to create ticket using templates
which can be customized by Trac administrator and themselves.

Approved by: erwin (mentor)
Feature safe: yes