Rework SSH key management UI to add GPG (#1293)

* Rework SSH key management UI to add GPG

* Add more detail to gpg key display

* Update CHANGELOG.md

* Implement deletion UI

* Implement adding gpg UI

* Various fixes

- Fix duplicate entry in locale
- Re-generate hash before verification since they are consumed

* Add missing translation

* Split template

* Catch not found/verified email error

options/locale/locale_en-US.ini

@@ -258,6 +258,7 @@ user_not_exist = The given user does not exist.
 last_org_owner = Removing the last user from a owner team isn't allowed because there must always be at least one owner in any given organization.
 
 invalid_ssh_key = Sorry, we're not able to verify your SSH key: %s
+invalid_gpg_key = Sorry, we're not able to verify your GPG key: %s
 unable_verify_ssh_key = Gitea cannot verify your SSH key, but we are assuming that it is valid, please double-check it.
 auth_failed = Authentication failed: %v
 
@@ -285,7 +286,7 @@ form.name_pattern_not_allowed = Username pattern '%s' is not allowed.
 profile = Profile
 password = Password
 avatar = Avatar
-ssh_keys = SSH Keys
+ssh_gpg_keys = SSH / GPG Keys
 social = Social Accounts
 applications = Applications
 orgs = Organizations
@@ -349,20 +350,33 @@ keep_email_private_popup = Your email address will be hidden from other users if
 openid_desc = Your OpenID addresses will let you delegate authentication to your provider of choice
 
 manage_ssh_keys = Manage SSH Keys
+manage_gpg_keys = Manage GPG Keys
 add_key = Add Key
 ssh_desc = This is a list of SSH keys associated with your account. Because these keys allow anyone using them to gain access to your repositories, it is highly important that you make sure you recognize them.
+gpg_desc = This is a list of GPG keys associated with your account. Because these keys allow verification of commit, it is highly important that you keep safe the corresponding private key.
 ssh_helper = <strong>Don't know how?</strong> Check out GitHub's guide to <a href="%s">create your own SSH keys</a> or solve <a href="%s">common problems</a> you might encounter using SSH.
+gpg_helper = <strong>Don't know how?</strong> Check out GitHub's guide <a href="%s">about GPG</a>.
 add_new_key = Add SSH Key
+add_new_gpg_key = Add GPG Key
 ssh_key_been_used = Public key content has already been used.
 ssh_key_name_used = Public key with same name already exists.
+gpg_key_id_used = Public GPG key with same id already exists.
+gpg_key_email_not_found = The email attached to the GPG key couldn't be found or is not yet confirmed: %s
+subkeys = Subkeys
+key_id = Key ID
 key_name = Key Name
 key_content = Content
 add_key_success = Your new SSH key '%s' has been added successfully!
+add_gpg_key_success = Your new GPG key '%s' has been added successfully!
 delete_key = Delete
 ssh_key_deletion = SSH Key Deletion
+gpg_key_deletion = GPG Key Deletion
 ssh_key_deletion_desc = Delete this SSH key will disable all access using this SSH key for your account. Do you want to continue?
+gpg_key_deletion_desc = Delete this GPG key will disable all commit verification sign with this GPG key. Do you want to continue?
 ssh_key_deletion_success = SSH key has been deleted successfully!
+gpg_key_deletion_success = GPG key has been deleted successfully!
 add_on = Added on
+valid_until = Valid until
 last_used = Last used on
 no_activity = No recent activity
 key_state_desc = This key is used in last 7 days
@@ -1364,7 +1378,6 @@ mark_as_unread = Mark as unread
 error.extract_sign = Failed to extract signature
 error.generate_hash = Failed to generate hash of commit
 error.no_committer_account = No account linked to committer email
-error.no_gpg_keys_found = "Failed to retrieve publics keys of committer"
 error.no_gpg_keys_found = "No known key found for this signature in database"
 error.not_signed_commit = "Not a signed commit"
 error.failed_retrieval_gpg_keys = "Failed to retrieve any key attached to the commiter account"