Add password reset components back (and reorganize component structure)

Does what it says, plus it organises components a bit more sanely:

components
├── README.md
├── client
│   ├── component-epub-frontend
│   ├── component-login
│   ├── component-manage
│   ├── component-navigation
│   ├── component-password-reset-client
│   ├── component-signup
│   ├── component-sortable-list
│   ├── component-users-manager
│   ├── component-xpub-dashboard
│   ├── component-xpub-manuscript
│   ├── component-xpub-submit
│   ├── component-xpub-teams-manager
│   ├── config
│   ├── test
│   ├── xpub-edit
│   ├── xpub-journal
│   ├── xpub-theme
│   ├── xpub-upload
│   ├── xpub-validators
│   └── xpub-with-context
└── server
    ├── component-aws-s3
    ├── component-email-templating
    ├── component-epub
    ├── component-password-reset-server
    ├── component-send-email
    ├── component-xpub-review-backend
    ├── job-xsweet
    ├── model-blog
    ├── model-blogpost
    ├── model-collection
    ├── model-fragment
    ├── model-team
    └── model-user

Their folder name is now their package name, without the starting @pubsweet/ or pubsweet- part.