Iss #154 - Encode remaining hanging esc char in JSON for ECA hook script

Hanging escape characters in JSON data is not considered valid and causes issues downstream on attempted validation. This change replaces them with a safe encoded version that represents the same content.

Resolves #154 (closed)

src/main/rb/eca.rb

@@ -122,7 +122,7 @@ end
 
 ## Get all new commits for branch, relative to itself for existing branch, relative to tree for new
 diff_git_commits_raw = ''
-if (previous_head_commit =~ /0+/) then
+if (previous_head_commit =~ /\0+/) then
   ## This isn't perfect as its relative to fork, but should be huge improvement
   diff_git_commits_raw = `git rev-list #{new_head_commit}  --not --branches=*`
 else
@@ -149,8 +149,8 @@ json_data = {
   :commits => processed_git_data,
   :strictMode => is_strict_enforced
 }
-## Generate request (use gsub to scrub any lingering \n constants)
-response = HTTParty.post("#{API_URL}/git/eca", :body => MultiJson.dump(json_data).gsub(/(\\n|\\r)/, ''), 
+## Generate request
+response = HTTParty.post("#{API_URL}/git/eca", :body => MultiJson.dump(json_data), 
   :headers => { 
     'Content-Type' => 'application/json',
     'charset' => 'utf-8'