`batch-open-conversations` add checkboxes to repo without read access #3487

Summary

• Add checkboxes to issues for batch-open-conversations when i don't have write access to the repo.
• see PoC below

Where

• when i go to Issues or Pull Requests (or bugs), for example https://github.com/sindresorhus/refined-github/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc

What i see

• missing checkboxes (note: the Open all checkbox is visible)

  <img width="710" alt="Missing Checkboxes" src="https://user-images.githubusercontent.com/184316/90654025-37ca2380-e240-11ea-902d-a122ba000b1b.png">

What i Expect

• see checkboxes like this image:

PoC

when i add manually the missing HTML components then this function works also on repo without write access - and i can open only the selected items.

Note: i just tested i only on this url https://github.com/sindresorhus/notifier-for-github/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc and not checked side effects and/or for other problems

Screenshots

<img width="515" alt="Bildschirmfoto 2020-08-19 um 19 49 52" src="https://user-images.githubusercontent.com/184316/90671683-5555b800-e255-11ea-8ef0-63a9d3f79935.png">

<img width="406" alt="Bildschirmfoto 2020-08-19 um 19 50 04" src="https://user-images.githubusercontent.com/184316/90671710-5be42f80-e255-11ea-812e-aa7a2d98b6a6.png">

Modifications

it was done just with copy over HTML from a repo with write access

a) add checkboxes to each issue row:

add as first child of div.js-issue-row > div.d-flex:

<label class="flex-shrink-0 py-2 pl-3  d-none d-md-block">
  <input 
    type="checkbox" 
    data-check-all-item="" 
    class="js-issues-list-check" 
    name="issues[]" 
    value="${issueId}" 
    aria-labelledby="issue_${issueId}_link" 
    autocomplete="off">
</label>

and fill in the ${issueId}

b) add the triage menu (without the triage actions)

add this code after div.table-list-filters:

<div class="table-list-triage flex-auto js-issues-toolbar-triage">
  <span class="text-gray table-list-header-toggle">
    <span data-check-all-count="">1</span> selected
    <button type="button" class="btn-link rgh-batch-open-issues pl-3">Open selected</button>
  </span>
</div>

c) add the "select all checkbox"

add this code before div.table-list-filters

<div class="mr-3 d-none d-md-block">
  <input type="checkbox" data-check-all="" aria-label="Select all issues" autocomplete="off">
</div>

Environment

Chrome: Version 84.0.4147.135 (Offizieller Build) (64-Bit) Refined GitHub: 20.8.16