Setup virtualenv to own folder for easy removal and changing.

Virtualenv now defaults to 'venv' instead of '.'

Refs #12273
Fix fabfile bug related to GIT_INSTALL checkout

django_object_log and django_object_permissions were getting checked out
from git even though they were listed in requirements.txt. This is due
to their names containing underscores and not dashes in GIT_INSTALL, and
they way their existence was checked for in install_dependencies_git()

Refs #12273
Ignore 'env' or 'venv' virtualenv directories.

Refs #12273
Create DEV and PROD constants for better reference.

We had a lot of strings of 'development' and 'production', which I
replaced with the constants DEV and PROD.

Refs #12273
Split requirements out to prod and dev.

Updated the fabfile to reflect that requirements.txt is now
requirements/prod.txt.

Refs #12273
Freeze django-object-permissions at 1.4.5

This fixes the problem of missing templates for object_permissions.

Refs #12273
Default deployment to production.

Only need to run fab deploy now, not 'fab prod deploy'

Refs #12273
Update documentation on activating virtualenv

Refs #12273
Update 'fab prod deploy' documentation references

Refs #12273
Merge branch 'enhancement/12273' of git.osuosl.org:ganeti/ganeti_webmgr into enhancement/12273

Conflicts:
	requirements/prod.txt

Since django-object-permissions is now at 1.4.5, requirements.txt should
reflect this.
Limiting fabric task list.

These available tasks are now: dev, deploy, tarball, clean, and update.

Refs #12273
Fabfile: Add a verbosity check

Some commands now check for a verbosity flag when running 'pip install'
so that the default of being quiet can be overridden.

Refs #12273
Fabfile: PEP8

Bringing the fabfile.py up to PEP8 compliance

Refs #12273
Refs #13287
Merge branch 'enhancement/12273' into release/0.10

Conflicts:
	fabfile.py
	requirements/prod.txt

Merge conflicts in fabfile.py were related to PEP8-ed code and fab
commands from LDAP, whereas conflicts in prod.txt were due to the patch
from 0.9.2 pinning django at 1.4, and object-permissions 1.4.5 being
released.