Move chat events handler to chat module. Rewrite binding command to function.
Several chat fixes
Go easy on the chat implementation
Merge vtols.js.inc and group.js.inc into tactics.js.inc (were too much interconnected)
Add group rebalancing mechanism, so that to not get stuck at max number of underpacked groups
Don't adapt to some senseless players
Make the harass group completely different
Minor tweaks to build order and research choices
Update caption for the alpha release
Revert "Update caption for the alpha release"

This reverts commit 998297285418c799db96a4fe586cd77d6b42b554.
Simplify chat split call
Improve VTOL management
Smoothen weapon role adaptation
Start working on a turtle AI (doesn't do much yet)
Smoothen some more weapon role choices
Add a missing undefined check in the attack code
Fix a typo in tower construction
Enable danger checks
Further modify build order
Pick up oil drums