Remove urls from translations (#31950)

Part of #27700

Removes all URLs from translation strings to easy up changing them in
the future and to exclude people injecting malicious URLs through
translations. First measure as long as #24402 is out of scope.

(cherry picked from commit 83f37f630246e381eefd650fc2d4b1f3976ea882)
Signed-off-by: Gergely Nagy <forgejo@gergo.csillger.hu>

Conflicts:
	- options/locale/locale_en-US.ini
	  Resolved by manually applying the URL->%s changes to our translations.
	- routers/web/admin/hooks.go
	  templates/repo/settings/protected_branch.tmpl
	  templates/status/500.tmpl
	  Manually resolved.
	- templates/repo/settings/webhook/settings.tmpl
	  Applied the change to templates/webhook/shared-settings.tmpl
	  instead

Additional changes: Gitea-specific URLs have been replaced by their
Forgejo counterparts, lifted from the original translation text.

templates/home.tmpl

@@ -17,7 +17,7 @@
 				{{svg "octicon-flame"}} {{ctx.Locale.Tr "startpage.install"}}
 			</h1>
 			<p class="large">
-				{{ctx.Locale.Tr "startpage.install_desc"}}
+				{{ctx.Locale.Tr "startpage.install_desc" "https://forgejo.org/download/#installation-from-binary" "https://forgejo.org/download/#container-image" "https://forgejo.org/download"}}
 			</p>
 		</div>
 		<div class="eight wide center column">
@@ -25,7 +25,7 @@
 				{{svg "octicon-device-desktop"}} {{ctx.Locale.Tr "startpage.platform"}}
 			</h1>
 			<p class="large">
-				{{ctx.Locale.Tr "startpage.platform_desc"}}
+				{{ctx.Locale.Tr "startpage.platform_desc" "https://go.dev/"}}
 			</p>
 		</div>
 	</div>
@@ -43,7 +43,7 @@
 				{{svg "octicon-code"}} {{ctx.Locale.Tr "startpage.license"}}
 			</h1>
 			<p class="large">
-				{{ctx.Locale.Tr "startpage.license_desc"}}
+				{{ctx.Locale.Tr "startpage.license_desc" "https://forgejo.org/download" "https://codeberg.org/forgejo/forgejo"}}
 			</p>
 		</div>
 	</div>