Fix bug with rename page to also delete old page

Implement delete page

fix

Make rebuild_index() more robust

Fix subtle bug in new click parameter handling

The parameter names must not be converted to upper case before calling
context.invoke, because that works with the lowercase names.

Before this bugfix,, we had kw like this in the various setup_* functions:
{'DB_URI': 'sqlite:////tmp/wiki.db', 'db_uri': 'sqlite:////real/path.db'}
and whichever won was pretty much random (dict sort order)

Improve setup, small bug fixes

Closes https://github.com/scragg0x/realms-wiki/issues/76

Upgrade gunicorn.
Add BS3 classes to rendered markdown tables. Fixes #72

Set path prefix for gunicorn when inside virtualenv

bumping gevent to 1.0.2

Make swapfile permanent by adding to fstab in install.sh

Update DataTables dependency to 1.10.7

This version includes a fix for a DataTables bug that can cause JS errors.
Possibly only affects certain jQuery versions but seems reproducible with
1.11.3

https://github.com/DataTables/DataTablesSrc/commit/485b259e5c

Make Elasticsearch searched fields configurable

This allows fields stuch as "content" to be searchable when using Elasticsearch
Add config item ELASTICSEARCH_FIELDS, list of fields to search.
Defaults to just "name" to preserve existing behaviour
Available fields are:
- "name"
- "username"
- "content"
- "message"

added the ability to make wiki private (resolves #54)

Improved installation steps + other small improvements.

Fixed typo on README

Added installation instructions for CentOS and Red Hat Enterprise Linux.
Other small improvements across the file.

version bump

fix docker runit script

nginx static content location root fixed

I just played with this and nginx is keeping the **/static/** in the requesting url and then attempting to find a folder on the file system that looks like **/full/path/to/realms/static/static/...**

This should fix that.

Reverse config path lookup

Add Whoosh as an alternate search backend