generators: Use single function for all templates

This commit makes use of a common function for all template parsing and page
writing. The behaviour is controlled by the "item" argument passed in. This
allows us to have a single code that generates code for list of items as well
as for a single item. In the future, this can be used for e.g. combining
thumbnails and large images on the same page.

Other than that this commit also brings several other changes:
 - further clarification of theming setup XML file
 - <protected_thumbnail> tag has been moved out of the <album> structure into
   the <index> structure where it functionally belongs. Only whole albums can
   be protected and the substitute thumbnail is displayed on index pages.
 - position marker format has been broken out to a constant
 - added few more FIXMEs to mark places that will change soon
 - some template variables have been renamed

1 files changed, 3 insertions, 3 deletions

diff --git a/templates/styles.css b/templates/styles.css
index 4b5cc27..ca7121d 100644
--- a/templates/styles.css
+++ b/templates/styles.css
@@ -221,7 +221,7 @@ div.album_item a:hover {
    border: 2px solid #A3BED4;
 }
 
-div.album_item img {
+div.album_item img.landscape {
    /* landscape */
    padding-top: 2.25em;
 }
@@ -344,7 +344,7 @@ div.index_item img {
    top: 1.4em;
 }
 
-.album_text {
+.album_text_landscape {
    font-size: 190%;
    font-weight: bold;
    position: relative;
@@ -371,7 +371,7 @@ div.index_item img {
    top: 0.65em;
 }
 
-.album_subtext {
+.album_subtext_landscape {
    font-size: 150%;
    position: relative;
    left: 13.1em;