fix(mg): allow resetting dependency cache in tests - #556

Changed pages include:

• index.html - view
• 404.html - view
• blog/index.html - view
• compiling/index.html - view
• dependencies/index.html - view
• environment/index.html - view
• filesources/index.html - view
• howitworks/index.html - view
• importing/index.html - view
• libraries/index.html - view

There are more changes not included in the list