Bug with theme name case

[opi]

After upgrading to 1.4.0, I was unable to change my theme. I always got the error "that theme does not seem to be installed".
I investigate, and finaly find the bug: the select list on the config page use theme_name as key, with first capital letter.
On the 1.3.0 version the theme list was hardcoded, with theme name in lowercase.

See f4fbfaa

I found my way out by using 'strtolower' on various places in Poche.class.php, and duplicate theme folders with first capital letter.

My opinion is theme identifier (and folders) might be lowercase, while theme name could be capitalized.

[nicosomb]

Did you try to empty cache folder?

[nicosomb]

Like you said on IRC, bug fixed.