always render the table, even if it's empty. this allows jquery to have an anchor to put content in. also explicitly add the <tbody> tag since the corresponding jquery code uses that one. this worked before because (at least) chrome adds implicit <tbody> tags if missing and the table isn't empty. fixes #384.
Improves check for api requests.

Timelines introduces a case where the json format is negotiated
but not represented in the format parameter via routes (i.e., the
extension ".json"). This change adds support for Accept-header content
negotiation, which results in the format field of the request. For
consistency, xml was also added.
fix user create with empty pwd

- fixed wrong condition in users pwd validation methode
fixes estimated_hours validation on issues by explicitly making it fail on invalid input strings
some tests for estimated_hours validation
cucumber scenario for adding issue relations through ajax
[OPF #478] fixes wiki page renaming

- changed wiki#rename routes to rails default 'put'
- adapted tests
add cuke for creating new board message
update README to metion that this is not a stable branch
some code improvements
Merge pull request #95 from opf/feature/rails3_enable_creating_board_messages

add cuke for creating new board message
Merge pull request #96 from opf/feature/rails3_readme

update README to metion that this is not a stable branch
Merge pull request #84 from opf/feature/rails3_issue-relations-fix

fix for not beeing able to add related issues (#384)
add .ruby-version to .gitignore. This is debatable. I think we should add this file to version control. But this might destroy some user/production environments (esp. for people using rvm and gemsets)
fixed failing test

- adapted wiki#rename routing test for put method
Merge pull request #89 from opf/features/rails3_fix_user_create_with_empty_pwd

fix user create with empty pwd
Merge pull request #92 from opf/feature/rails3_fix_rename_wiki_page

[OPF #478] fixes wiki page renaming
add cuke for renaming wiki pages
updated gems
[OPF #492] fixes special chars in issue subject