Tasks split out from umbrella ticket {T260816}
**Requirements**
For the sidebar:
[] Remove trashcan from small toolbar at bottom right of VE sidebar.
[] **Update parameter list**
[] The sidebar will display all parameters defined for the template (in TemplateData), not just those that have been added in the template dialog.
[] The icon to the left of the parameter names is removed and replaced with an OOUI checkbox (unclear if you can use the entire widget, because only checkbox is clickable - see below). These are used to add and remove parameters to the invocation of the template, i.e. shown or removed from the main input section on the right.
[] Required parameters should have a disabled, selected checkbox and cannot be removed from the template.
[] Added parameters should have a selected checkbox
[] Un-added parameters should have an un-selected checkbox and the text should be grayed out (Base30).
[] Clickable area for the add/remove function is limited to the checkbox itself and does not include the name of the parameter. Clicking on the name of the parameters allows the user to jump to this parameter in the main input section on the right, and the cursor is inserted into that parameter's field (current behavior).
[] If template has no parameters, show 'No parameters' text instead of checkboxes.
For the main input area of the dialog:
[] Remove the 'Add more information' dropdown at the bottom of the main input area, where parameters are currently added to templates. However, still allow this to appear at the bottom of the the main input area, if the user clicks the add parameter button in the bottom left menu bar.
[] Remove the trash icons which show next to the parameter name when it's "in focus"
[] Remove the trash icon next to the template name in the description/help area.
**Mocks** (Specs coming!)
{F32357651}{F32357657}
Checkbox: 20x20px
Parameter names: Body
16px padding between parameters and between param/template name