New option data and some minor bugfixes#12

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baxeico wants to merge 6 commits intoHawkers:masterfrom

Commits on Sep 10, 2013

possibility to have id_map assigned to element.data() and not necessarily in a hidden field
Augusto Destrero
committed
added copyright
Augusto Destrero
committed
cut contents at cursor position, otherwise if you have multiple triggers only the last will work
Augusto Destrero
committed
insert space after selection only if needed and compute the new caret position accordingly
Augusto Destrero
committed

Commits on Sep 11, 2013

fix menu keyboard navigation and preload id_map from data() and not from attr()
Augusto Destrero
committed
error check
Augusto Destrero
committed