* [np] Added stub schema objects for functions and views.
* [np] Made cdecimal optional to ease running on cpython 3.4.
Use CurrentTimestampDefault, add triggers.

* [core] Use CurrentTimestampDefault schema element.
* [core] Added 2 triggers for initial testing.
Use CurrentTimestampDefault
Use CurrentTimestampDefault in entities
Use CurrentTimestampDefault + bugfixes
Fix duplicate key name
Fix schema creation for sessions.

server_default=NULL apparently doesn't work for SQLalchemy's TIMESTAMP
column type.
Use CurrentTimestampDefault in stashes
Use CurrentTimestampDefault in tickets
Use CurrentTimestampDefault in xop
Added .gitignore
Merge pull request #1 from annndrey/master
Merge branch 'master' of https://github.com/unikmhz/npui
Updated module dependencies.

Updated and simplified module dependencies. Added missing install-time
deps. Added "python 3.4" trove category.
Merge branch 'master' into schema-support
DDL generation for more object types.

Implemented DDL generation for functions/procedures.
Also added stub generation code for views and events.
Added DDL template for functions/procedures.

Only for MySQL at the moment.
Added schema to access module.

Added a function and some triggers for testing.
Amended .gitignore