I'm wondering if there is any way in which someone that does not use Eclipse or any compiler is able to change/edit the .properties files and repack the war so that he/she is able to change (for example) the labels in the application.
Right now whatever modifications I make in the project's war folder in the workspace does not seem to affect the app when deploying.
Hopefully someone with a bit more experience with GWT/GXT will take the time and let me know.
No,They won't effect on client.Because your app.chache.js is already prepared and then you trying to modify the .properties file.
Your all messages(labels) from properties file going to be used while compiling time it self.Later even if you changed there until next compile they wont effect.
For dynamic lable changes use i18n or some third party libraries.