message: implemented applyTheme("bootstrap") with cssType
diff: +import { surveyCss } from "./defaultCss/cssstandard";
  export class StylesManager {
  private static SurveyJSStylesSheetId = "surveyjs";
  @@ -289,40 +290,6 @@ export class StylesManager {
  };
  public static bootstrapThemeCss: { [key: string]: string } = {
  - ".sv_bootstrap_css .form-group.is-focused .form-control":
  - "background-image: linear-gradient($main-color, $main-color), linear-gradient(#D2D2D2, #D2D2D2);",
  - ".sv_bootstrap_css .form-group.is-focused label": "color:$main-color;",
  -
  - ".sv_bootstrap_css .checkbox input[type=checkbox]:checked + .checkbox-material .check":
  - "border-color: $main-color;",
  - ".sv_bootstrap_css label.checkbox-inline input[type=checkbox]:checked + .checkbox-material .check":
  - "border-color: $main-color;",
  - ".sv_bootstrap_css .checkbox input[type=checkbox]:checked + .checkbox-material .check:before":
  - "color: $main-color;",
  - ".sv_bootstrap_css label.checkbox-inline input[type=checkbox]:checked + .checkbox-material .check:before":
  - "color: $main-color;",
  -
  - ".sv_bootstrap_css .radio input[type=radio]:checked ~ .circle":
  - "border-color: $main-color;",
  - ".sv_bootstrap_css label.radio-inline input[type=radio]:checked ~ .circle":
  - "border-color: $main-color;",
  - ".sv_bootstrap_css .radio input[type=radio]:checked ~ .check":
  - "background-color: $main-color;",
  - ".sv_bootstrap_css label.radio-inline input[type=radio]:checked ~ .check":
  - "background-color: $main-color;",
  -
  - ".sv_bootstrap_css .btn-default.active":
  - "background-color: $main-color; color: $body-background-color;",
  - ".sv_bootstrap_css .btn-default:active":
  - "background-color: $main-color; color: $body-background-color;",
  - ".sv_bootstrap_css .open>.dropdown-toggle.btn-default":
  - "background-color: $main-color; color: $body-background-color;",
  -
  - ".sv_bootstrap_css input[type='button'], .sv_bootstrap_css button":
  - "color: $body-background-color; background-color: $main-color;",
  - ".sv_bootstrap_css input[type='button']:hover, .sv_bootstrap_css button:hover":
  - "background-color: $main-hover-color;",
  -
  ".sv_main .sv_q_imgsel.checked label>div": "background-color: $main-color"
  };
  @@ -391,8 +358,10 @@ export class StylesManager {
  let ThemeCss;
  if (["bootstrap", "bootstrapmaterial"].indexOf(themeName) !== -1) {
  ThemeCss = StylesManager[themeName + "ThemeCss"];
  + surveyCss.currentType = themeName;
  } else {
  ThemeCss = StylesManager.ThemeCss;
  + surveyCss.currentType = "standard";
  }
  let sheet = StylesManager.findSheet(themeName + themeSelector);
  