fix(balance): clear cached P2C ready index after a discovery removal - #874

Changed pages include:

• help.html - view
• settings.html - view
• tower/index.html - view
• tower_layer/index.html - view
• tower_service/index.html - view
• tower_test/index.html - view
• tower/all.html - view
• tower/balance/index.html - view
• tower/buffer/index.html - view
• tower/builder/index.html - view

There are more changes not included in the list