Merge pull request #168 from IanDominey/master

Removed unnecessary underscores.
Fix headers in polish Felix and Herbert
Remove superfluous space in “be fore”

Fixes #171.
Merge pull request #172 from andylolz/171-typo

Remove superfluous space in “be fore”
Edits "If" to "If X then"

Line 118 - it seems in Scratch 2.0 there is not an "If" control command, but an "If X then"

Not sure if this edit will render the graphics accordingly
Merge pull request #173 from stevieflow/patch-1

Edits "If" to "If X then"
Merge pull request #170 from codecleaner/patch-1

Fix headers in polish Felix and Herbert