Revert "add missing shaders"

This reverts commit 88dff5a8bca595f4efc70e68e146125ac3abedd3.
Revert "make a GameState class"

This reverts commit a005630df2e61e1f402f3c085bb07ba7e183b08b.
Revert "apply Castler's fix for textbox input & add popups"

This reverts commit cfd5a3225b43ee9fb9e4a8a442e26beb1f7197fe.
Revert "comment out three fonts that are making trouble"

This reverts commit 149d65c1d161b0986b0d8fa25efc2e29cfc8b926.
Revert "implement Game Options screen"

This reverts commit 25e2f312b70181ad2c6b7483b7e790c2fce9d3c6.
Revert "implement Marson's UI addon"

This reverts commit 84682b6f9a636bc38360125468334e5fc7d5a9ea.
Revert "add Marson UI fonts"

This reverts commit eb0448fb72240f37b2a37b5e142342cba32de11c.
Revert "enable better shaders"

This reverts commit f056f0a745e77a161920ce786d074e054330682c.