Update Database.php

Change of datatype of content
improve isMobile detection
Add share buttons (thanks a lot to Brosseau Valentin)
Merge pull request #97 from PowerIVQ/master

Change of datatype of content for MySQL
Merge branch 'master' of github.com:SSilence/selfoss
* readability is now available as spout and not as global option
* allow more html tags in articles content
readme update
Display unread count for tags.
Yet TODO: dynamic updating!
Unread counts for all tags with proper update
move config.ini to defaults.ini, config.ini overrides with user-config
Update .htaccess
allow more html tags in articles content
Merge pull request #100 from stuporglue/master

Move config.ini to defaults.ini, non-tracked user config in config.ini
Merge branch 'master' of github.com:SSilence/selfoss
Merge pull request #101 from PowerIVQ/master

disallow visiting .ini file from webserver
Merge branch 'master' of github.com:SSilence/selfoss
Merge pull request #99 from fedxa/upstream+tagcount

Displaying number of unread items for each tag
Merge branch 'master' of github.com:SSilence/selfoss
* fix tag counter: update also on mark all as read
* support tag counter with postgresql
* update "mark as read" button of every article on marking all as read
remove debug setting