Additional fixes to Negligentia and 4-1 to 4-4.
Conslidated entered_arena_delay code a little.
UI Tweaks, including player status timers.

Normal mode changed to challenge mode, easy -> normal.

Removed progress circles as an option.

Reworked level 4-7.
Made all status timers consistent, except boss timers.
Made better Ultimate graphics.

Another UI pass. Changed buttons to IconButtons.

Made controls better. Re-activated some Hotkeys.

In process of improving RewardGameState.
Added textured backgrounds to all screens.
Polished first-time tutorial.
Fixed Tutorial. Created Ult tutorial, Intro tutorial, etc.

Also created two separate game modes with buttons on title state.

Challenge mode and Standard Mode.
Added better enemy descriptions.

Started balancing Easy Mode. Made first few levels much easier.
Created initial_spawn_easy and enemies_spawn_easy
Removed player while ulting from boss levels.
Fixed rendering bugs with bosses (pre-draw related)
Underlined buttons when hover.
Make gateway more clear when open.
Need to go through portal for score to count in practice.

Made message boxes for new enemy appear longer.
Balanced 2nd world for Easy mode.