Merge pull request #794 from caktus/unidecode

Change vendor install of unidecode to a PyPI install
Merge pull request #781 from caktus/no-button-buttons

no more class=“button button”
[Fix bug 964434] show a membership pending message

Squashed commits:
- cleaned up whitespace
- restored placement of join.leave buttons
- Styled pending status bar just above list of members. Moved “Leave Group” button into the info - box where other buttons appear.