Extensions (#737)

- add the current document title in the toolbar
- allow user extensions to define optional parameters
- more events for renamedElement, beforeClear, afterClear, sourceChanged
- remove "message" event used for iframe integration not used anymore. can be readded through a new extension if necessary
- default precision down to 2 digits (and applied in rotation)

cypress/integration/ui/issues/issue-726.js

@@ -15,12 +15,14 @@ describe('Fix issue 726', function () {
       .trigger('mousedown', 250, 250, { force: true })
       .trigger('mousemove', 350, 350, { force: true })
       .trigger('mouseup', { force: true })
+    cy.wait(300)
     cy.get('#tool_rect')
       .click({ force: true })
     cy.get('#svgcontent')
       .trigger('mousedown', 10, 0, { force: true })
       .trigger('mousemove', 100, 100, { force: true })
       .trigger('mouseup', { force: true })
+    cy.wait(300)
     cy.get('#tool_rect')
       .click({ force: true })
     cy.get('#svgcontent')
@@ -30,7 +32,7 @@ describe('Fix issue 726', function () {
     cy.wait(300)
     cy.get('#svg_3')
       .rightclick(0, 0, { force: true })
-    cy.get('a:contains("Send Backward")').click()
+    cy.get('a:contains("Send Backward")').click({ force: true })
     cy.get('#svg_2').should(($div) => {
       const id = $div[0].previousElementSibling.id
       assert.equal(id, 'svg_3')