Colour coded modules on recovery

When picking up a module from a destroyed enemy ship, the player would
only get the module name but not the rarity. This has been changed so
that the text is now coloured depending on the module's rarity (as in
the shipyard)
Removed changelog from the project

The changelog is now part of the assets and no longer versioned in
github
Updated loot table

Neutral ships can now drop uncommon modules 25% of the time (from 15%)
Pirate ships can now drop uncommon modules 60% of the time (from 30%)
Energy cost per second is now displayed on weapons

Energy cost per second is now displayed on weapons