Jira improvements, Bodhi updates, GitHub pagination, Zammad...

• Install all required packages during docs building
• Adjust code style to be pep8 compatible
• Update docs for contributors, enable pre-commit
• Add basic support for Zammad
• Check if the GitHub credential token is valid
• Fix jira issues search when user login provided
• Add minor clarification note about token name
• Split jira token expiration into two options
• Adjust the support for Jira Personal Access Tokens
• Support Personal Access Token in the Jira plugin
• Return all the bugzilla results from a search
• Install fresh sphinx when building readthedocs
• Adjust the paging support for the GitHub plugin
• Add pagination support for GitHub, fixes #247
• Adjust the new plugin for reporting bodhi updates
• Add a new plugin with support for Bodhi updates
• Use user email for searching updated jira issues
• Adjust the switch from fiscal to calendar year
• Switch from fiscal year to natural year
• Update docs for gitlab, github and confluence
• Give a better message upon jira search failure
• Raise the number of github issues fetched per page