make default installation lighter and more helpful out of the box

[lsh-0]

user story (I do these now):

as a technical person installing Mondroid I want the default installation to be lighter and more helpful out of the box because monitoring is often added as an after-thought or while stressed out, causing more stress and a bad impression and we always want to leave a great impression.

• replace mysql dependency with sqlite3.
  • mysql python library requires -dev libraries to be installed with apt-get.
  • remove mysql-python from requirements.txt
  • update installation docs in README
• remove test_settings.py
  • dev_settings.py should suffice in deriving settings files for different environments.
  • add further EMAIL* options to dev_settings but commented out
  • add EMAIL_BACKEND too, with different backend
  • update README with 'copy dev_settings.py to settings.py and tweak' type instructions.
• add a cron job
  • add an example cronjob file to repo
  • example: https://bitbucket.org/lskibinski/working-dir-script/src
  • update README with how to install this cron job
• add cookie-cutter instructions for Apache or nginx instructions
  • provide example vhost files
• add (not recommended) instructions to README for running using the development server
  • address has to be opened up with ./manage.py runserver 0.0.0.0

[lsh-0]

first two have been done ("replace mysql dependency with sqlite3" and "remove test_settings.py")

[lsh-0]

cron job example has been done

[lsh-0]

apache example has been added

[lsh-0]

nginx instructions have been added. these haven't been tested particularly well, but the point isn't to do everything, just point in the right direction. /excuses