more migration to common docs (#370)

* more migration to common docs

* refactoring js

* removed duplicate docs

* migrating more docs

* more refactoring

* migrated browsers page

* updated summary

docs/blocks/logic/boolean.md

@@ -1,77 +1,8 @@
-# Boolean
+# @extends
 
-true or false.
+## #examples
 
-A Boolean has one of two possible values: `true`; `false`.  Boolean (logical) operators (*and*, *or*, *not*) take Boolean inputs and yields a Boolean value. Comparison operators on other types ([numbers](/reference/types/number), [strings](/reference/types/string) yields a Boolean value.
-
-The following blocks represent the true and false Boolean values, which can be plugged in anywhere a Boolean value is expected:
-
-```blocks
-true;
-false;
-```
-
-The next three blocks represent the three Boolean (logic) operators:
-
-```blocks
-true && false;
-true || false;
-!true;
-```
-
-The next six blocks represent comparison operators that yield a Boolean value. Most comparisons you will do involve [numbers](/reference/types/number):
-
-```blocks
-42 == 0;
-42 != 0;
-42 < 0;
-42 > 0;
-42 <= 0;
-42 >= 0;
-```
-
-Boolean values and operators are often used with an [if](/blocks/logic/if) or [while](/blocks/loops/while) statement to determine which code will execute next. For example:
-
-### Functions that return a Boolean
-
-Some functions return a Boolean value, which you can store in a Boolean variable. For example, the following code gets the on/off state of `point (1, 2)` and stores this in the Boolean variable named `on`. Then the code clears the screen if `on` is `true`:
-
-### Boolean operators
-
-Boolean operators take Boolean inputs and evaluate to a Boolean output:
-
-### Conjunction: `A and B`
-
-`A and B` evaluates to `true` if-and-only-if both A and B are true:
-
-```blocks
-false && false == false;
-false && true == false;
-true && false == false;
-true && true == true;
-```
-
-### Disjunction: `A or B`
-
-`A or B` evaluates to `true` if-and-only-if either A is true or B is true:
-
-```blocks
-false || false == false;
-false || true == true;
-true || false == true;
-true || true == true;
-```
-
-### Negation: `not A`
-
-`not A` evaluates to the opposite (negation) of A:
-
-```blocks
-!false == true;
-!true == false;
-```
-
-### Example
+### Example: ``AND`` operator
 
 This example turns on LED `3 , 3`, if LEDs `1 , 1` and `2 , 2` are both on:
 
@@ -81,7 +12,7 @@ if (led.point(1,1) && led.point(2,2)) {
 }
 ```
 
-### Comparisons of numbers and strings
+### Example: Comparisons of numbers and strings
 
 When you compare two Numbers, you get a Boolean value, such as the comparison `x < 5` in the code below:
 
@@ -97,8 +28,3 @@ input.onButtonPressed(Button.A, () => {
 ```
 
 See the documentation on [Numbers](/reference/types/number) for more information on comparing two Numbers. You can also [compare strings](/reference/types/string-functions) using the `equals` function.
-
-### See also
-
-[if](/blocks/logic/if), [while](/blocks/loops/while), [number](/reference/types/number)
-

docs/blocks/logic/if.md

@@ -1,16 +1,6 @@
-# If
+# @extends
 
-### @parent blocks/language
- 
-
-Conditionally run code depending on whether a [Boolean](/blocks/logic/boolean) condition is true or false.
-
-```blocks
-if(true) {
-}
-```
-
-Click on the dark blue gear icon (see above) to add an *else* or *if* to the current block.
+## #examples
 
 ### Example: adjusting screen brightness
 
@@ -23,8 +13,3 @@ input.onButtonPressed(Button.A, () => {
     }
 })
 ```
-
-### See also
-
-[while loop](/blocks/loops/while), [for](/blocks/loops/for), [boolean](/blocks/logic/boolean)
-