Update development.rst

Added notes regarding dev branch
Backporting log level AttributeError bug fix
More fault-tolerate error handling
Added Ubuntu Desktop installation instructions
Added missing settings.py step
Added note about Skype bin bitness issue
Added note about the presence of 64-bit Skype
Merged dev for 1.2 release
Preparing release 1.2
Back to development: 1.3
Merge pull request #40 from builtinnya/dev

Minor fixes
Preparing release 1.2.1
Back to development: 1.3
Update README.rst

Added link to CHANGES
Added missing MD5 import
Bug fixes
Preparing release 1.2.2
Back to development: 1.2.3
Merge branch 'master' of github.com:opensourcehacker/sevabot