refactor(html): replace html tags with custom tags

Replace regular html tags with custom dothiv tags. Only 'center' banner at this
time.
Merge branch 'master' of github.com:dothiv/banner into no-ajax
fix(js): experimental fix of xml namespace for IE7 and below
Merge branch 'master' of github.com:dothiv/banner into no-ajax
fix(js): extended experimental code of 8b10cd54
Merge branch 'master' of github.com:dothiv/banner into no-ajax
fix(js): do not use className property when dealing with old IEs
Merge branch 'master' of github.com:dothiv/banner into no-ajax