* Add option to skip the AvatarURL input request

Using an empty string for the avatar cli flag e.g. `git-bug user create
-a ""` will still result in a prompt. As the avatar URL is an optional
option, it should be possible to skip asking for it entirely.
Otherwise automated user creation via a script must make use of pipe hacks.

* Add global --non-interactive cmdline option

* Replace --skipAvatar for --non-interactive option

* Cmd BugAdd: respect non-interactive option

* Cmd bridge configure: respect non-interactive opt

* Cmd CommentAdd: respect non-interactive option

* Cmd CommentEdit: respect non-interactive option

* Cmd TermUI: respect non-interactive option

* Cmd TitleEdit: respect non-interactive option

* Remove global non-interactive option

* Cmd UserCreate: Use local non-interactive option

* Cmd BugAdd: Use local non-interactive option

* Cmd BridgeConfigure: Use local non-interactive option

* Cmd CommentAdd: Use local non-interactive option

* Cmd CommentEdit: Use local non-interactive option

* Cmd TermUI: Drop non-interactive option

It should be obviouse that the termui is an interactive command.

* Cmd TitleEdit: Use local non-interactive option

* Update docs

* Bridge GitHub: respect non-interactive option

* Bridge GitLab: respect non-interactive option

* Bridge Jira: respect non-interactive and token opt

* Fix failing compilation

* Bridge launchpad: respect non-interactive option

* bridge: isNonInteractive --> interactive

Co-authored-by: Michael Muré <batolettre@gmail.com>

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.20 to 4.17.21.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](https://github.com/lodash/lodash/compare/4.17.20...4.17.21)

Signed-off-by: dependabot[bot] <support@github.com>

Bumps [url-parse](https://github.com/unshiftio/url-parse) from 1.4.7 to 1.5.1.
- [Release notes](https://github.com/unshiftio/url-parse/releases)
- [Commits](https://github.com/unshiftio/url-parse/compare/1.4.7...1.5.1)

Signed-off-by: dependabot[bot] <support@github.com>

Bumps [ua-parser-js](https://github.com/faisalman/ua-parser-js) from 0.7.21 to 0.7.28.
- [Release notes](https://github.com/faisalman/ua-parser-js/releases)
- [Commits](https://github.com/faisalman/ua-parser-js/compare/0.7.21...0.7.28)

Signed-off-by: dependabot[bot] <support@github.com>

Bump github.com/go-git/go-billy/v5 from 5.2.0 to 5.3.1

Bumps [github.com/go-git/go-billy/v5](https://github.com/go-git/go-billy) from 5.2.0 to 5.3.1.
- [Release notes](https://github.com/go-git/go-billy/releases)
- [Commits](https://github.com/go-git/go-billy/compare/v5.2.0...v5.3.1)

Signed-off-by: dependabot[bot] <support@github.com>

Show placeholder for empty comment(preview)

Make comment input vertically resizable

Very long words wont any longer overflow over the parent container boundary.
Instead a scrollbar will be shown.

* CLI - allow user create without prompt. Fixes #577

* Update commands/user_create.go email message

Co-authored-by: Michael Muré <batolettre@gmail.com>

* Update docs

Co-authored-by: Michael Muré <batolettre@gmail.com>

Bump github.com/go-git/go-billy/v5 from 5.1.0 to 5.2.0

github: attempt to fix a CI issue

Retrieving events is spread across various various Gitlab APIs. This
makes importing and sorting Gitlab events by time quite complicated.

This commit replaces the old iterators with a goroutine/channel-based
iterator, which merges the individual Gitlab API streams into a single
(sorted) event stream.

Bumps [github.com/go-git/go-billy/v5](https://github.com/go-git/go-billy) from 5.1.0 to 5.2.0.
- [Release notes](https://github.com/go-git/go-billy/releases)
- [Commits](https://github.com/go-git/go-billy/compare/v5.1.0...v5.2.0)

Signed-off-by: dependabot[bot] <support@github.com>

WebUI: Add user profile

cache: fix empty actors/participants in the index

Unless an ID must be shorted for user convenience, the full id should be used
to prevent collisions.

repo: workaround more go-git concurrency issue

Support new GitHub token formats

GitHub have introduced a new format for their access tokens, which does
not fit within the rules of the previous regex. For the time being, the
previous token format is still being supported by GitHub, so it makes
sense to continue allowing legacy tokens.

https://github.blog/changelog/2021-03-04-authentication-token-format-updates/

Fix ID string in order to find correct bug instance on comment edit operation

Bump github.com/MichaelMure/go-term-text from 0.2.10 to 0.3.1

Bump github.com/xanzy/go-gitlab from 0.44.0 to 0.48.0

Bumps [github.com/MichaelMure/go-term-text](https://github.com/MichaelMure/go-term-text) from 0.2.10 to 0.3.1.
- [Release notes](https://github.com/MichaelMure/go-term-text/releases)
- [Commits](https://github.com/MichaelMure/go-term-text/compare/v0.2.10...v0.3.1)

Signed-off-by: dependabot[bot] <support@github.com>

Bumps [github.com/xanzy/go-gitlab](https://github.com/xanzy/go-gitlab) from 0.44.0 to 0.48.0.
- [Release notes](https://github.com/xanzy/go-gitlab/releases)
- [Changelog](https://github.com/xanzy/go-gitlab/blob/master/releases_test.go)
- [Commits](https://github.com/xanzy/go-gitlab/compare/v0.44.0...v0.48.0)

Signed-off-by: dependabot[bot] <support@github.com>

Bump github.com/go-git/go-git/v5 from 5.2.0 to 5.3.0

repository: workaround a non thread-safe path in go-git

fix https://github.com/MichaelMure/git-bug/issues/497

make sure every text input is safe and validated

fix #630

Authorcomponent links to the authors profile page.
Replace pofile buglist with statistics