[c-c delete] add quote on db drop statement to be more robust to exotic database names

[ajax] apply Ronan Dunklau patch closing #1433305: loadRemote js function failure on Firefox 4 with upper cased base domain name

[schema] ease understanding of schema naming error

[db-create] we should always ask db user that should be used when special privileges are required

[entity] fix some docstrings

[js] always lowercase baseuri #1433305

[rset] add utility method to get entities and attributes from any rset

[url publishing] evaluate url rewrite rules before rest path so one may easily override schema based urls

[ui, index page] drop useless 'schema entities' table

[views] delete ``permission`` tab in ``SchemaView``

[schema] fix CWSource permissions

[migration] fix migration of old cw instances which do not have yet the CWUniqueTogetherConstraint entity type

[repo] kill no more needed 'recreate' feature

[repo] move cursor creation into the try/except, it may raises an InterfaceError if the connection is closed

[repository auth] cleanup email login by turning it into a proper repo-side authentication plugin