added max import loops for debugging

force resync takes a lot of resources and time if it iterates through
several years of twitter data. i put an extra value at the beginning to
loop only n+1 times. may be this should be a user setting?
also fixes #44 by removing html_entity_decode
added a couple of fixes

* added max_import_loops limiter
* added geo data
* fixed possible wrong facebook link
* encode html entities, otherwise html was excecutable (needs to be
done for all other mods, too)
small fix for missing self::
Merge pull request #47 from nonsenz/master

small fix for missing self::
added more checks and logging for Opengraph-Reader when trying to fetch remote content. this should fix #42.
small fix for missing self::

i wonder why that worked anyways?
Merge pull request #48 from nonsenz/master

this should fix #42. added more checks and logging for Opengraph-Reader when..
added album import and cosmetic fixes
added optional handling of image array to attach to post
simplified twitter embed/content

no point in putting the tweet in a blockquote or stating the twitterers
name (it /me) or stating the date or the backlink. it’s all in the
post’s meta data:
author, link, date
basically the tweet is striped down to the bare content. which makes
sense for one’s own tweets.
* Fixed facebook mod's indentation and removed spurious tags.