Various fixes for apache mod_wsgi run

tracim/development.ini.base

 # i18n.lang = fr
 
 cache_dir = %(here)s/data
-# preview generator cache directory
+# preview generator cache directory
 preview_cache_dir = /tmp/tracim/preview/
 # file depot storage
 depot_storage_name = tracim
 # notifications generated by a user or another one
 email.notification.from.email = noreply+{user_id}@trac.im
 email.notification.from.default_label = Tracim Notifications
-email.notification.content_update.template.html = ./tracim/templates/mail/content_update_body_html.mak
-email.notification.content_update.template.text = ./tracim/templates/mail/content_update_body_text.mak
-email.notification.created_account.template.html = ./tracim/templates/mail/created_account_body_html.mak
-email.notification.created_account.template.text = ./tracim/templates/mail/created_account_body_text.mak
+email.notification.content_update.template.html = %(here)s/tracim/templates/mail/content_update_body_html.mak
+email.notification.content_update.template.text = %(here)s/tracim/templates/mail/content_update_body_text.mak
+email.notification.created_account.template.html = %(here)s/tracim/templates/mail/created_account_body_html.mak
+email.notification.created_account.template.text = %(here)s/tracim/templates/mail/created_account_body_text.mak
 # Note: items between { and } are variable names. Do not remove / rename them
 email.notification.content_update.subject = [{website_title}] [{workspace_label}] {content_label} ({content_status_label})
 email.notification.created_account.subject = [{website_title}] Created account
 # radicale.client.base_url.prefix = /
 
 ## WSGIDAV
-wsgidav.config_path = wsgidav.conf
+wsgidav.config_path = %(here)s/wsgidav.conf
 ## url can be extended like 127.0.0.1/webdav
 ## in this case, you have to create your own proxy behind this url.
 ## Do not set http:// prefix.