Correction of config storage + option to change credentials

* Add an option in config to change credentials
* [Bug correction ?] Pass, login and salt are stored in both pass.php
and config.dat files.
Added a .htaccess file to block access to log.txt
Merge pull request #34 from Phyks/master

Correction of config storage + option to change credentials
1.82

remove bug of free access to private snippet
Merge branch 'master' of https://github.com/broncowdd/SnippetVamp
issue #29
Merge branch 'master' of https://github.com/broncowdd/SnippetVamp
.htaccess file to protect against log publicly viewable
Issue #36
try to fix issue #35

test
forgot a correction in save function
Merge branch 'master' of https://github.com/broncowdd/SnippetVamp
Merge des branches
Merge pull request #37 from Phyks/master

Correction du problème de log publicly viewable
1.83 correction 

fix a bug mentionned here https://github.com/broncowdd/SnippetVamp/issues/35#issuecomment-23243813
change version number to 1.83
Merged with upstream
No more stripslashes, they seem to be useless and cause some problems.
Added a javascript function to handle tabs in textarea.
Added redirections after data sent and treated in POST to avoid multiple insertions
Rename file snippetvamp.php to index.php