Typo fix

Typo fix
Docstrings and return value

Method comments should be docstrings.

check5() return else condition not in loop.
Default event track is half hour not 30 hours

This is a leftover from revision 9304
where the duration property of events changed unit
from minutes to hours but the defualt value remained 30.
[FIX] account_analytic_analysis: recurring invoices

Properly support yearly recurring invoices
Update README.md

The only grammar problem left.
Merge pull request #62 from luisalvarado/master

Update README.md
Merge pull request #50 from vice/master

Default event track is half hour not 30 hours
Merge pull request #33 from richierichrawr/master

Docstrings, typo, and return value
Broken @route arguments for events pages