Ensure consistent UI Strings in front_end/models/workspace

Summary of changes:
- Add terminal periods to localization comments in IgnoreListManager
and UISourceCode.
- Re-word 'Call Stack Sidebar Pane' to 'Call Stack sidebar' to follow
DevTools UI terminology.
- Re-word 'UISource Code' to 'UISourceCode' in localization comment.
- Simplify file external change prompt by removing unnecessary words and
politeness in UISourceCode.

Fixed: 531626575
TAG=agy
CONV=c0faad9d-ab89-401c-ba4a-e82c0ec15d3c
Change-Id: I70fe766d0b857452da148f44be1aeee4373ca51c
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/8066824
Commit-Queue: Simon Zünd <szuend@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Auto-Submit: Yang Guo <yangguo@chromium.org>

front_end/models/workspace/IgnoreListManager.ts

diff --git a/front_end/models/workspace/IgnoreListManager.ts b/front_end/models/workspace/IgnoreListManager.ts
index 09a9a2f..b516ab9 100644
--- a/front_end/models/workspace/IgnoreListManager.ts
+++ b/front_end/models/workspace/IgnoreListManager.ts
@@ -13,27 +13,27 @@
 
 const UIStrings = {
   /**
-   * @description Text to stop preventing the debugger from stepping into library code
+   * @description Text to stop preventing the debugger from stepping into library code.
    */
   removeFromIgnoreList: 'Remove from ignore list',
   /**
-   * @description Text for scripts that should not be stepped into when debugging
+   * @description Text for scripts that should not be stepped into when debugging.
    */
   addScriptToIgnoreList: 'Add script to ignore list',
   /**
-   * @description Text for directories whose scripts should not be stepped into when debugging
+   * @description Text for directories whose scripts should not be stepped into when debugging.
    */
   addDirectoryToIgnoreList: 'Add directory to ignore list',
   /**
-   * @description A context menu item in the Call Stack Sidebar Pane of the Sources panel
+   * @description A context menu item in the Call Stack sidebar of the Sources panel.
    */
   addAllContentScriptsToIgnoreList: 'Add all extension scripts to ignore list',
   /**
-   * @description A context menu item in the Call Stack Sidebar Pane of the Sources panel
+   * @description A context menu item in the Call Stack sidebar of the Sources panel.
    */
   addAllThirdPartyScriptsToIgnoreList: 'Add all third-party scripts to ignore list',
   /**
-   * @description A context menu item in the Call Stack Sidebar Pane of the Sources panel
+   * @description A context menu item in the Call Stack sidebar of the Sources panel.
    */
   addAllAnonymousScriptsToIgnoreList: 'Add all anonymous scripts to ignore list',
 } as const;

front_end/models/workspace/UISourceCode.ts

diff --git a/front_end/models/workspace/UISourceCode.ts b/front_end/models/workspace/UISourceCode.ts
index 0a4266b..01a84c9 100644
--- a/front_end/models/workspace/UISourceCode.ts
+++ b/front_end/models/workspace/UISourceCode.ts
@@ -14,13 +14,13 @@
 
 const UIStrings = {
   /**
-   * @description Text for the index of something
+   * @description Text for the index of something.
    */
   index: '(index)',
   /**
-   * @description Text in UISource Code of the DevTools local workspace
+   * @description Text in UISourceCode of the DevTools local workspace.
    */
-  thisFileWasChangedExternally: 'This file was changed externally. Would you like to reload it?',
+  thisFileWasChangedExternally: 'This file was changed externally. Reload?',
 } as const;
 const str_ = i18n.i18n.registerUIStrings('models/workspace/UISourceCode.ts', UIStrings);
 const i18nString = i18n.i18n.getLocalizedString.bind(undefined, str_);