Comment 2 for bug 1184463

And of course, the 2 best things for the end:

1/ Immediately see visually the tweet we're currently answering to:
http://i.imgur.com/upJya1m.png

=> and if we delete the mention, we automatically see that, that'll become a new independent tweet rather than an answer therefore:
http://i.imgur.com/AHVL3A1.png

2/ Having the field that auto resizes to 2 lines of height when required (and to 1 line again if we remove some characters):
http://i.imgur.com/tmNElQW.png (here because of a manual RT but also if we type manually too much)
=> Height space optimization of the screen like so, only show 2 lines of height when required.