changed restore_functions to ordered dict

* save dashboard using uid rather than dashboard name

* bump version
* update CHANGELOG

add configuration attribute to set backup file name

remove useless cleanup metod within tempfile

Update for issue https://github.com/ysde/grafana-backup-tool/issues/106

added python2 support to restore functions

[Feature] add AWS_ENDPOINT_URL config option

add option backup_file_format in config

Update README.md

richer documentation details

fix issue of https://github.com/ysde/grafana-backup-tool/issues/96

Optional pretty print

This can make it easier to see changes when the backups are compared within version control.

Note, this changes to always pretty-print the JSON.  You might prefer that it's a configurable option.

basic auth should not override bearer auth

fix save.py component name typo

fix typo

- #83 Fix tarfile options for python2
- #64 Remove empty folders when backup file (.tar.gz) created.

Change x:gz to w:gz for supporting python2

removed s3 from default config

* added config example

fix a couple of typos