Remove Screenwidth from default theme

Fix issue #288
Make defaultbutton and cancelbutton grey
White background instead of light grey
Fix a typo
Revert to original colours in CharView

The current theme has softer tones that are nicer to look at but too low
in contrast.
Removing hotkeys from tango resources file
Adding hotkeys back
Fix for SFD reading.
Merge pull request #1164 from monkeyiq/2014feb/issues/1119

Fix for SFD reading.
If one of the python scripts at startup fails just show the warning message
and not a modal dialog box as well.
Merge pull request #1165 from monkeyiq/2014/softer-errors-for-python-menu-scripts

If one of the python scripts at startup fails just show the warning mess...
Allow makefile to autogen gitignore in tango icon dir
Drop some unichar_t variant of widgets which are not used for >8yr, according to git blame and function caller graph
Allocate string dynamically instead of relying on char array in dialogs
osx: first try to include even http://xxyxyz.org/even/
Merge pull request #1166 from monkeyiq/2014/issues/1144p1

osx: first try to include even http://xxyxyz.org/even/
osx: optional ability to use 'even' from the menu in shipped build.
Merge pull request #1167 from monkeyiq/2014/issues/1144p2

osx: optional ability to use 'even' from the menu in shipped build.
Rework histogram dialog to use utf8 strings instead of unichar_t
u_sprintf() and friends now begone