Browser version updated to 0.1.4

Another minor update to the Browser version, simply due to the fact that I was feeling creative yesterday.

• Changed introduction to be more informative, including adding a new CG and a new piece of BGM.
• Implemented a CG Gallery, accessible through the in-game menu. CG images will be unlocked and visible here as the game goes on.

Also, I restructured the game files a little behind the scenes:

• The storyline will now be referred to as taking place in "Chapter 1", Chapter 2", and so on instead of "Day 1", "Day 2", etc. 
• The Flashback system will eventually contain playable mini-chapters so you can get a more in-depth look at the storyline of the War.

Edit: I'm noticing some lag on this version. This is due to the very RPG Maker way I originally implemented the pictures. I will be creating a fix for this in future versions.

Additional credits for this version: 

• Picture Gallery code from Mog Hunter.