Option + Click on "Header.h" for opening the file

[konrad1977]

1. Show file functions of the current file.
   I Includeed a file how xCode handles this.

2. Keyboard shortcut for 'Open Corresponding...' file
3. Option + Click on "Header.h" for opening the file.

[KapiX]

1. Add functions overview #28.
2. Added as Cmd+Opt+O in 4db7b34.

[KapiX]

Removing milestone. Should be done as an IDE integration feature.

[ttcoder]

Is this the right ticket for getting parity with Pe's "Command-D" feature ? I.e. moving the cursor to one of the e.g. #include <Window.h> lines at the beginning of my source code, hit Command-D, and the os/interface/Window.h system header is located and open. This is easily one of my top-five most used features in Pe, I almost never have to use the BeBook thanks to that feature. Or is this ticket specifically about "open corresponding header".