Rename actions to operations on UI (#22067)

Use "operations" to indicate "some something can be done", to prevent
users from confusing it with CICD.

Releated to: #13539.

Snapshots:

<img width="389" alt="image"
src="https://user-images.githubusercontent.com/9418365/206409797-a99bac25-2d38-4066-b9ab-27a4f6fe67e7.png">
<img width="398" alt="image"
src="https://user-images.githubusercontent.com/9418365/206410099-bbd258a9-54d9-4664-8d95-31d29cb35209.png">
<img width="442" alt="image"
src="https://user-images.githubusercontent.com/9418365/206410218-009a3103-a9b9-4d0c-86b6-540dda5bce89.png">

I'm not a native English speaker, but I think "operations" may be good
enough, and Gitea already uses this word:

<img width="1440" alt="image"
src="https://user-images.githubusercontent.com/9418365/206410671-4a718b14-0603-40cb-bdcb-f6f84d1f5e24.png">

options/locale/locale_en-US.ini

@@ -1018,7 +1018,7 @@ unstar = Unstar
 star = Star
 fork = Fork
 download_archive = Download Repository
-more_actions = More Actions
+more_operations = More Operations
 
 no_desc = No Description
 quick_guide = Quick Guide
@@ -1173,7 +1173,7 @@ commits.signed_by_untrusted_user_unmatched = Signed by untrusted user who does n
 commits.gpg_key_id = GPG Key ID
 commits.ssh_key_fingerprint = SSH Key Fingerprint
 
-commit.actions = Actions
+commit.operations = Operations
 commit.revert = Revert
 commit.revert-header = Revert: %s
 commit.revert-content = Select branch to revert onto:
@@ -2989,7 +2989,7 @@ monitor.queue.pool.cancel_desc = Leaving a queue without any worker groups may c
 
 notices.system_notice_list = System Notices
 notices.view_detail_header = View Notice Details
-notices.actions = Actions
+notices.operations = Operations
 notices.select_all = Select All
 notices.deselect_all = Deselect All
 notices.inverse_selection = Inverse Selection