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
Merge pull request #1177 from yurchor/master

Avoid hiding strlen function needed by strcmp
Adding screenshot
Merge branch 'master' of github.com:fontforge/fontforge
Update fontforge.appdata.xml
better support for integration of python pygtk mainloop into fontforge mainloop.

I will hush the printfs shortly as they only serve to see that things
are working initiall. ie, I'll remove them once I can see that this
works on osx.
Merge pull request #1179 from monkeyiq/2014feb/ipythonupdates

better support for integration of python pygtk mainloop into fontforge m...
grr, we are going to need those files in git too!
Merge pull request #1180 from monkeyiq/2014feb/ipythonupdates2

grr, we are going to need those files in git too!
now that I added everything, remove these generated files.
Merge pull request #1181 from monkeyiq/2014feb/ipythonupdates3

now that I added everything, remove these generated files.
osx: using LD_LIBRARY_PATH allows the python code to load the gdraw shared
     library. Sync portfile with the one from the build env.
Merge pull request #1184 from monkeyiq/2014feb/ipythonupdates4

osx: using LD_LIBRARY_PATH allows the python code to load the gdraw shared library
osx: hush prints, make a softlink to smooth platform differences.