Set proper classes on error messages.
Improved text of error messages in review editor.
Fixed duplicate error messages on log in page.
Updated Flask-Login version.
Made account-related messaging consistent.
Fixed typo.
Updated UI of user's review list.
Added a message about markdown support in review editor.
Merge branch 'markdown-note' into stage1
Merge branch 'duplicate-errors' into stage1
Merge branch 'consistency' into stage1
Merge branch 'error-styling' into stage1