[erlang-patches] observer tv fixes

[Peti Gömöri]

Hi,

finally a table visualizer in wx.
unfortunately it crashed pretty easily when I tried to click here and there.
Here are some tiny improvement proposals to fix some of the issues:
- when canceling in Edit Object window 'cancel' atom is expected to be returned
- when parsing edited object according to erl_parse docs "token list
must end with the dot token"; ensure this is always true
- handle parse errors in edited objects
- handle invalid regexp in search
- MEssageDialog error terms even if they are not strings
- show printable strings in objects instead of integer lists (like old
tv did) (ugly: 9999 terminal width)


thanks
Peter
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