Performance boost and code clean-up

[laplamgor]

Improve the performance overall

Completed:

• remove unused code/variables
• rework regex usage of the Kantai3D mod and 120fps mod
  • reduce ~700MB mem usage when loading main.js, faster loading
• rewrite regex of mouseDown event replacer
  • reduce ~130MB mem usage when loading main.js, faster loading
• use string + string instead of String.concat() (the latter is not optimized in compile time)
  • reduce ~140MB mem usage when loading main.js, faster loading
• combine touchover and touchout regex patterns
  • reduce ~60MB mem usage when loading main.js

Planned (will be another PR):

• cache main.js in app life-cycle (i.e. only use cached main.js when refreshing in-game, but not at the first load)
• rework Regex usage of the modCritPatcher mod
• review all logging level (use DEBUG instead of INFO/WARN/ERROR whenever possible to reduce I/O)

[antest1]

about the logging, logs in code are suppressed by the proguard so you may not need to work on the log level. code

[laplamgor]

I did some tests. The patch main.js is still the same as before.

You can merge when you have time to verify.

[antest1]

thanks for your hard work! I think we also need to work on new equipment filter though orz