Selecting and unselecting meta-items

[opticod]

In continuation with #364, It will be good to add the one click de-select option, even for the meta details part in comprehension and match-the following templates.

[dr0pdb]

@opticod I would like to work on it if it's open

[opticod]

@srv-twry, Yes you can proceed.

[abhishekd08]

Is this project still active ? ... If it is, I would like to contribute. Can you suggest me any issues to work on ?