Important: #EXTBLOG-88 - Remove $GLOBALS['TYPO3_DB']

See https://jira.typo3.com/browse/EXTBLOG-88

Description

This patch removes all calls to $GLOBALS['TYPO3_DB'] and replace it with doctrine calls.

This patch introduce also two new columns in table :sql:pages:

• :sql:crdate_month

• :sql:crdate_year

Both fields are used for the data aggregation of the archive sidebar widget. For existing blog posts, an UpdateWizard is in place and should be executed in the install tool.

Impact

An existing installation must run the UpdateWizard, else the output of the archive sidebar widget is broken.