Consistent code and language formatting

Taking a peek at the codebase and strings these days I noticed a lot of inconsistent code syntax style/formatting (e.g., if (thing) vs. if(thing)). Though, I found a stale issue #422 about solving this already.

Additionally I have minor quibbles about certain terminology used in strings along the application. For example, Jar vs. JAR—Oracle and Wikipedia both use the styling of "JAR," so I think using that instead may be more proper. The same could also be said about ZIP, etc.

I also noticed the usage of two periods (..) versus three as a proper ellipses, which also raises the question whether three periods should be used (...), or Unicode's HORIZONTAL ELLIPSIS (…); personally, I like the latter.

Additionally I noticed that there may be some inconsistency with the grammar of translations. For example, in the Vietnamese translation file, many translation strings have a space before the ellipses but not the periods (e.g., "Lưu dưới dạng Zip ..." vs. "Mở..."). There also appear to be un-translated strings as well ("Save As Runnable Jar ..." in vietnamese.json).

I am willing to go through myself and fix the grammar bits, but I'm also curious what you think about code formatting (since #422).

Start by reading the stale issue #422 and reviewing the codebase's formatting conventions, then inspect vietnamese.json for the cited translation inconsistencies. Define consistent code syntax, terminology, ellipsis usage, spacing, and translation coverage across the application; done means the agreed conventions are applied consistently.