You can do this with Soft Undo, accessible from the Edit/Undo Selection menu.

The console, find results, and and build output are all independent panels, and can be switched between at will. You can do this via the "Find/Find Results/Show Find Results" and "Build/Build Results/Show Build Results" menu options.

Fixed in 2076

If the previous selector isn't reliable for every part of the file, then you may want to be more explicit, and change it to something like "source.java - text.html.jsp"

You should be able to get the same thing by changing the scope on the java build system to "source.java - source.java.embedded"

This can be done by first splitting the selection into lines (command+shift+l on osx), and then using the regular wrap selection in tag binding - I don't think a separate binding is desirable in this case.

The trim_trailing_white_space_on_save setting can be used for this

You can use the file_exclude_patterns global preference for this

When installing, there's a checkbox "Add to explorer context menu" that can be ticked to enabled this.