* Added support for the Montserrat Font as discussed in #3201
I chose a thin version of the Font (namely Montserrat Light) as the regular font and Montserrat Regular as the bold version. The thin fonts just look better in my opinion.
I added RobotoMono-Regular and RobotoMono-Bold as TrueTypeFont files and included them into the list. I tred to stay in alphabetical order where possible.
The author of #3201 was asking for a more modern monospaced font.
Most of the code here has been taken from @LaKing's #2554.
Only icons required for etherpad have been added. Here is a
list of the code points that are being used:
0xe800 0xe801 0xe802 0xe803
0xe804 0xe805 0xe806 0xe807
0xe808 0xe809 0xe80a 0xe80b
0xe80c 0xe80d 0xe80e 0xe80f
0xe810 0xe811 0xe812 0xe813
0xe814 0xe815 0xe816 0xe817
Their related icon names can be seen in:
/src/static/css/fontawesome-etherpad.css
Even though this patch *adds* all the required icons it only
uses them in the in toolbar. The switch to using only FontAwesome
icons and the removal of old PNG files will only happen after the
timeslider interface has been updated.
This is the first step for #2253
