Release 1.20.3 (#3340)

* fix edit timesheet link
* fix drag & drop creates record for wrong user
* fix search with multiple bindings
* hide user switcher in calendar if there is only one user to choose
* make quick entry responsive for mobile-only users
* mark invoices as exported by default
* fix serialization deprecation warning
* fix duration calculation for fixed rate entries
* updated composer packages
* fix checkbox for horizontal forms
* support pdfContext for PDF invoice templates

assets/sass/forms.scss

@@ -14,6 +14,13 @@ form.form-narrow {
     }
 }
 
+/* Mark as exported checkbox in export and invoice create screen */
+.form-horizontal {
+    .checkbox {
+        min-height: 20px;
+    }
+}
+
 /* bootstrap3 hack because the filter look plain ugly without it (see report: project month) */
 .checkbox-menu li label {
     display: block;