Dont allow ? in project path

Because it causes 500 error on every page where link to such project
exists
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

lib/gitlab/regex.rb

@@ -72,7 +72,7 @@ module Gitlab
     end
 
     def default_regex
-      /\A[.?]?[a-zA-Z0-9_][a-zA-Z0-9_\-\.]*(?<!\.git)\z/
+      /\A[a-zA-Z0-9_.][a-zA-Z0-9_\-\.]*(?<!\.git)\z/
     end
   end
 end

spec/lib/gitlab/regex_spec.rb

+require 'spec_helper'
+
+describe Gitlab::Regex do
+  describe 'path regex' do
+    it { 'gitlab-ce'.should match(Gitlab::Regex.path_regex) }
+    it { 'gitlab_git'.should match(Gitlab::Regex.path_regex) }
+    it { '_underscore.js'.should match(Gitlab::Regex.path_regex) }
+    it { '100px.com'.should match(Gitlab::Regex.path_regex) }
+    it { '?gitlab'.should_not match(Gitlab::Regex.path_regex) }
+    it { 'git lab'.should_not match(Gitlab::Regex.path_regex) }
+    it { 'gitlab.git'.should_not match(Gitlab::Regex.path_regex) }
+  end
+
+  describe 'project name regex' do
+    it { 'gitlab-ce'.should match(Gitlab::Regex.project_name_regex) }
+    it { 'GitLab CE'.should match(Gitlab::Regex.project_name_regex) }
+    it { '100 lines'.should match(Gitlab::Regex.project_name_regex) }
+    it { 'gitlab.git'.should match(Gitlab::Regex.project_name_regex) }
+    it { '?gitlab'.should_not match(Gitlab::Regex.project_name_regex) }
+  end
+end