Term ordering controls.

The order column in a lesson now contains text fields with
its ordinal instead of just plain number. By changing the
numbers it’s possible to change the terms’ order.

Any numbers can be put in, they are sorted and saved as an
indiscrete sequence 1 to n.
Switched the language to English.
Initial commit
Created a README file.
Removed duplicate lines from README.
Sample DB config.
Resolve conflict.