Merge pull request #486 from xiemaisi/js/lower-severities

Approved by asger-semmle

javascript/ql/src/DOM/AmbiguousIdAttribute.ql

@@ -4,7 +4,7 @@
  *              same id attribute, it may be interpreted differently
  *              by different browsers.
  * @kind problem
- * @problem.severity error
+ * @problem.severity warning
  * @id js/duplicate-html-id
  * @tags maintainability
  *       correctness

javascript/ql/src/DOM/ConflictingAttributes.ql

@@ -3,7 +3,7 @@
  * @description If an HTML element has two attributes with the same name
  *              but different values, its behavior may be browser-dependent.
  * @kind problem
- * @problem.severity error
+ * @problem.severity warning
  * @id js/conflicting-html-attribute
  * @tags maintainability
  *       correctness

javascript/ql/src/Declarations/MissingVarDecl.ql

@@ -3,7 +3,7 @@
  * @description If a variable is not declared as a local variable, it becomes a global variable
  *              by default, which may be unintentional and could lead to unexpected behavior.
  * @kind problem
- * @problem.severity error
+ * @problem.severity warning
  * @id js/missing-variable-declaration
  * @tags reliability
  *       maintainability

javascript/ql/src/Expressions/DuplicateCondition.ql

@@ -3,7 +3,7 @@
  * @description If two conditions in an 'if'-'else if' chain are identical, the
  *              second condition will never hold.
  * @kind problem
- * @problem.severity error
+ * @problem.severity warning
  * @id js/duplicate-condition
  * @tags maintainability
  *       correctness

javascript/ql/src/Expressions/DuplicateSwitchCase.ql

@@ -3,7 +3,7 @@
  * @description If two cases in a switch statement have the same label, the second case
  *              will never be executed.
  * @kind problem
- * @problem.severity error
+ * @problem.severity warning
  * @id js/duplicate-switch-case
  * @tags maintainability
  *       correctness