(core) Delete my account button

Summary:
Adding new "Delete my account" button to the profile page that allows users to remove completely
their accounts as long as they don't own any team site.

Test Plan: Added

Reviewers: georgegevoian, paulfitz

Reviewed By: georgegevoian, paulfitz

Subscribers: paulfitz

Differential Revision: https://phab.getgrist.com/D4037

app/client/ui2018/cssVars.ts

@@ -168,6 +168,7 @@ export const theme = {
   lightText: new CustomProp('theme-text-light', undefined, colors.slate),
   darkText: new CustomProp('theme-text-dark', undefined, 'black'),
   errorText: new CustomProp('theme-text-error', undefined, colors.error),
+  errorTextHover: new CustomProp('theme-text-error-hover', undefined, '#BF0A31'),
   dangerText: new CustomProp('theme-text-danger', undefined, '#FFA500'),
   disabledText: new CustomProp('theme-text-disabled', undefined, colors.slate),
 

app/client/ui2018/modals.ts

@@ -341,6 +341,8 @@ export interface ConfirmModalOptions {
   hideCancel?: boolean;
   extraButtons?: DomContents;
   modalOptions?: IModalOptions;
+  saveDisabled?: Observable<boolean>;
+  width?: ModalWidth;
 }
 
 /**
@@ -352,7 +354,7 @@ export function confirmModal(
   title: DomElementArg,
   btnText: DomElementArg,
   onConfirm: () => Promise<void>,
-  {explanation, hideCancel, extraButtons, modalOptions}: ConfirmModalOptions = {},
+  {explanation, hideCancel, extraButtons, modalOptions, saveDisabled, width}: ConfirmModalOptions = {},
 ): void {
   return saveModal((ctl, owner): ISaveModalOptions => ({
     title,
@@ -360,8 +362,9 @@ export function confirmModal(
     saveLabel: btnText,
     saveFunc: onConfirm,
     hideCancel,
-    width: 'normal',
+    width: width ?? 'normal',
     extraButtons,
+    saveDisabled,
   }), modalOptions);
 }