bumped the tag char limit to 255
there wasn't really much reason to have this so low, and this puts it to the same limit as other booru software
avoid errors if tag exceeds limit + flash message showing the problem tag
Merge pull request #434 from DakuTree/patch-tagfix

Fix for tags exceeding char limit returning error + Bumped tag char limit to 255.
Check event handler exists before calling it, in case the cache is out of date. Fixes #442
give IndexTheme:display_page some sub-functions to make them easier to customise
[anchor] bbcode tag, to make linking to parts of a page easier
simplify user_can_edit_user -- many nested if/else's to one if
Merge pull request #444 from shish/check_handler_exists

Check handler exists
Merge pull request #446 from shish/simplify_uceu

simplify user_can_edit_user -- many nested if/else's to one if
Merge pull request #448 from shish/theme_breakdown

Make IndexTheme a little easier to customise
Hide "Download All Images" if ZipArchive doesn't exist/not enabled
make anchors visible in the page, not just in the markup
Merge pull request #445 from shish/bbcode_anchor

[anchor] bbcode tag, to make linking to parts of a page easier
fix "Image Only" not working with nice_urls disabled
Merge pull request #452 from DakuTree/patch-fix451

Fix "Image Only" not working with nice_urls disabled - Fixes #451
regex for word filtering
make block placement more explicit
Merge branch 'develop' of https://github.com/shish/shimmie2 into develop
Merge pull request #450 from DakuTree/patch-zipcheck

Hide "Download All Images" if ZipArchive doesn't exist/not enabled - Fixes #441