fix(ui): make repo lfs settings tables more flexible (#13885)

Most of the changes are intended to improve mobile-friendliness.

- Remove erroneous `{{` (no impact)
- Change "Accessible to user" string to "User-readable", as it is
  otherwise cut off an all platforms.
- Copy most of the class names from authentication sources apart from
  'striped'.
- Remove unnecessary leftover 'attached' keyword.
- Use same classes for both lfs.tmpl and lfs_pointer.tmpl tables.

Screenshots

(The change includes a minor cosmetic modification, but given that it just took up more space and was [called ugly](https://codeberg.org/forgejo/forgejo/pulls/12960#issuecomment-20561813), I hope that this won't be controversial. The screenshots shown below will include "portrait mode" screenshots.)

### Before

https://codeberg.org/attachments/33765110-f426-4cc9-b53b-83e1bd146ead
https://codeberg.org/attachments/6d49743d-3500-447b-9352-6feb02a9f3dc
https://codeberg.org/attachments/e79558cb-16a7-4378-b6fe-c13b9d9dde13

### After

https://codeberg.org/attachments/349f2cc9-c66a-4e52-8b1b-c9cd09053eea
https://codeberg.org/attachments/7dca04c4-733d-445a-9ad5-eb840d60b391
https://codeberg.org/attachments/fdb5f545-7efb-4911-80ce-8b9cb22a6196

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/13885
Reviewed-by: 0ko <0ko@noreply.codeberg.org>

Author: n0toose

options/locale/locale_en-US.ini

@@ -2563,7 +2563,7 @@ settings.lfs_pointers.sha = Blob hash
 settings.lfs_pointers.oid = OID
 settings.lfs_pointers.inRepo = In repo
 settings.lfs_pointers.exists = Exists in store
-settings.lfs_pointers.accessible = Accessible to user
+settings.lfs_pointers.accessible = User-accessible
 settings.lfs_pointers.associateAccessible = Associate accessible %d OIDs
 settings.rename_branch_failed_protected = Cannot rename branch %s because it is a protected branch.
 settings.rename_branch_failed_exist = Cannot rename branch because target branch %s exists.

templates/repo/settings/lfs.tmpl

@@ -10,10 +10,10 @@
 			</h4>
 		</div>
 		<div class="ui attached segment">
-			<table id="lfs-files-table" class="ui attached segment single line table">
+			<table id="lfs-files-table" class="ui very basic table unstackable">
 				<thead>
 					<tr>
-						<th class="four wide"}}>{{ctx.Locale.Tr "repo.settings.lfs_pointers.oid"}}</th>
+						<th class="four wide">{{ctx.Locale.Tr "repo.settings.lfs_pointers.oid"}}</th>
 						<th class="two wide" data-tooltip-content="{{ctx.Locale.Tr "repo.settings.lfs.size"}}">{{ctx.Locale.Tr "repo.settings.lfs.size"}}</th>
 						<th class="two wide" data-tooltip-content="{{ctx.Locale.Tr "repo.settings.lfs.last_update"}}">{{ctx.Locale.Tr "repo.settings.lfs.last_update"}}</th>
 						<th class="three wide"></th>

templates/repo/settings/lfs_pointers.tmpl

@@ -16,7 +16,7 @@
 			{{end}}
 		</h4>
 		<div class="ui attached segment">
-			<table id="lfs-files-table" class="ui fixed single line table">
+			<table id="lfs-files-table" class="ui very basic table unstackable">
 				<thead>
 					<tr>
 						<th class="three wide">{{ctx.Locale.Tr "repo.settings.lfs_pointers.sha"}}</th>