I would like to provide two suggestions. The first one directly refers to your discussions with students:


  There is no vacant classroom around, and I don't have time to go with students to my office, which is in a different building.


If the questions really need to be answered immediately, you could simply take the discussion outside into the hallway. Surely, most of the students have to or want to leave, anyway, I presume, as they might have to move to different buildings themselves (?)

For anything else, you do not have to "have office hours right after the lecture", and you do not have to "go with students to [your] office". They are adults. Surely, your students can find out where your office is on their own and come there when you are free.

My second suggestion is related to whether you may stay around in the lecture room after your class:

It generally seems like the most corteous and natural thing to me that once the class has ended, one should try and leave the room as quickly as possible. Unless otherwise regulated by your organisation, I see no basis for the fundamental belief


  I have a right to stay in the classroom after my lecture for at least 5-10 minutes


... unless your departure actually takes that long (e.g. because you have to pack some elaborate experimental setups for a while). At the same time, however, I wouldn't concede the other lecturer any basic right to arrive in the classroom at least 5 - 10 minutes before the next lecture starts, unless some elaborate setup needs to be prepared for that lecture.

In other words: If you are entitled to stay for at least 5 to 10 minutes after your lecture has ended, I would argue that the next lecturer is just as entitled to claim the room for themselves at least 5 to 10 minutes before the next lecture starts.

With that said, it is usually well possible to stay around to answer such questions, though that does neither mean that the room will be reserved for you (the next lecture may already be under preparation), nor are you automatically the "main party" (in that you may block the "lecturer's desk" or any such central device, rather than cluster your discussion in a corner of the room to give the next people space).

Another instructor is pushing me out of the classroom right after my class ends
  

When I use the app switcher in GNOME 3.16, the IPython Qt Console (version 3.1.0) doesn't have a title under its icon (see image, and compare with Chromium). I also noticed that the icon doesn't have a title in the GNOME dock, nor is it present in the GNOME bar at the top.

I thought that maybe the title would be set in the .desktop file, but then I had a look at my /usr/share/applications/ipython-qtconsole.desktop and it doesn't look any different from other applications (i.e. it has a Name label set to an IPython value).

Is there a way to add a title manually?

I'm on Arch Linux using GNOME 3.16.1.
