Merge pull request #67 from chrqls/dev

[#39] Updating web client for teacher
[#39] Interactive buttons, status in auto-update, updating view
Merge commit '6d2c67b' into dev
[#39] Cool, START_SOLVE and START_SHOW appearsgs
[#39] Refresh page when starting a session
[#39] Only delete questions during START_MAKE phase
[#39] Start solving button only appearing if students>0 and cleaning stuff
Removing from versionning static/js/.DS_Store
[#39] Yeeeees, I finally found a way to increase smileAlert for a better UI
[#39] smileAlert v2 operational
[#39] Size of students and questions appearing
[#39] Checkbox selection in process but working good for now
[#39] I finally found a way to fix tr selection when switching section
[#39] Yeeeees, we can save new iqset with web teacher app
[#39] Fixing 2 bugs: multiple selection listener called in UpdateGVM() and fixing layout bug of save button
[#39] Making global variables in capital to manage time interval (for ex. DELAY_SHORT, DELAY_LONG)
[#39] Replacing double by single quote in most of the JS. Opacity for alerts + variable width