Feature/ Notification search

[xkopenreview]

when the user is involved in many conferences, it's hard to check the notifications from a certain conference.

this pr should add the search input in notifications page so that user can search the email subject

[xkopenreview]

currently there's no unit tests or integration tests for notification page which is not good

[carlosmondra]

So this PR makes a search on all messages using subject prefix? I feel like most people will expect to be a search over any part of the text. Is this related to an issue we are trying to fix?

[xkopenreview]

So this PR makes a search on all messages using subject prefix? I feel like most people will expect to be a search over any part of the text. Is this related to an issue we are trying to fix?

related to openreview/openreview#201 to filter messages from certain venue

[carlosmondra]

So this PR makes a search on all messages using subject prefix? I feel like most people will expect to be a search over any part of the text. Is this related to an issue we are trying to fix?

related to openreview/openreview#201 to filter messages from certain venue

Wouldn't it be easier to use the domain keyword?

[xkopenreview]

So this PR makes a search on all messages using subject prefix? I feel like most people will expect to be a search over any part of the text. Is this related to an issue we are trying to fix?

related to openreview/openreview#201 to filter messages from certain venue

Wouldn't it be easier to use the domain keyword?

i think there's no domain keyword
if it can be added and support regex it will be better