Several GUI improvements and fixes

[Thodor12]

Changes proposed in this pull request

• New: New design for the miner levels gui:
  
• New: Added "empty texts" to several windows that are usually empty (tasks, work orders, min stock, stats, etc)
• Improved: Improved code for the miner window & work order window
• Bugfix: Removed pause and lightbox properties from nearly all interfaces, ensuring that all pages within buildings/citizens pause the game and show the lightbox correctly
• Bugfix: Fix spacing between help, inventory, and summary buttons in buildings gui
• Bugfix: Removed dual inventory button in buildings gui
• Bugfix: Fixed job hiring window job text being outlined at the bottom + being white on hover
• Bugfix: Removed colons from several module window titles, for consistency sake

Testing

• Yes I tested this before submitting it.
• I also did a multiplayer test.

Review please