Fixes to the UI and AI

• [AI] AI no longer builds cheap buildings (housing, food factory) in case there is an energy shortage.
• [UI] Fix for research screen loosing the current technology when a research completes.
• [UI] In ground battle, the start battle button now shows only if all vehicles have been deployed.

Screen fixes

Notable changes:

• [UI] Walking around the ship now uses custom mouse cursors. Thanks @p-smith
• [UI] Scaled spacewar screen now properly displays mouse cursor over objects. Thanks @Zalewa

Minor bugfixes

Notable changes:

• Fixed error in case the user and the auto-build removed a building at the same time. Issue #920
• [Simulation] Fixed tax and population calculation resulting in NaN to prevent proper planet death and causing other calculations to go haywire. Issue #921
• [UI] Fixed the continue button to be properly enabled/disabled after profile change. Issue #922

Migration to GitHub

This release contains only URL updates inside the game and tools.