Added Debian-specific install tips
Change condition & counterbalance to numbers

A researcher building on this template will probably expect these two values to be integers.
from logger.info to logger.error (Closes #122)

thanks @zywind
add support for shell variable PSITURK_GLOBAL_CONFIG_LOCATION (Closes #109)

Thanks @NicholasEhrhardt
Removed the length specification for the datastring column in the participant model. Database creation fails for postgreSQL when a length is specified for TEXT type columns.
Update install.rst
Update install.rst
postgres specific datastring declaration to deal with text limit specification issue
Merge pull request #135 from ebuz/postgresql_model_fix

Postgresql model fix
Merge pull request #123 from adam353/patch-1

Added Debian-specific install tips
Merge pull request #130 from JSlote/patch-1

Change condition & counterbalance to numbers
don't quit on ctrl-c (Issue #106)

this just ignores ctrl-c to avoid quitting by mistake.  to quit type 'exit'
New 'config' subcommand which replaces print_config and reload_config (Closes #105)

lays foundation for modifying configuration options from the command line shell
trying to fix all the printing problems that were introduced recently...
ignore case on config option, what about if database table or username contains 'postgres'
checks for mysql-python library before starting up SQLAlchemy to avoid unfriend crash (Closes #97)