Layout View Ids: use @id instead of @+id for referenced ids

[bmarty]

Using @id instead of @+id for referenced ids is better since there will be only one declaration for each id, so code navigation will be simplified. For instance the dialogs:

and in the code

will disappear and the navigation will directly goes to the view which has the searched id.

Initially reported by @Florian14 , but I do not think he has created an issue about it.

A global replacement could be done, also some rules could be added to this file: https://github.com/vector-im/element-android/blob/main/tools/check/forbidden_strings_in_layout.txt to avoid the issue to come back

[Florian14]

@bmarty Note that the +id should be kept at the declaration level, + should be removed only in the references (in the constraints of another view for example)

[bmarty]

Of course, I'm talking about "referenced ids" here :)

[bmarty]

In EA 1.3.10