Improve IE11 compatibility (kevinpapst#147)

added romanian translations (kevinpapst#142)

added hebrew translations (kevinpapst#141)

Esperanto translation; transalted by Sofia Zaretskaia, reviewed by Mi…

…chal Matusov (kevinpapst#125)

updated all assets (kevinpapst#123)

added slovakian translations (kevinpapst#116)

added Basque translations (kevinpapst#115)

add method to remove MenuItem from menu (kevinpapst#113)

added chinese translations (kevinpapst#102)

Danish translations (kevinpapst#101)