Update login.template.php

added alt tag and backslash
Update de.lang.php
Update de.lang.php
Update bootstrap.js
Update 2.page.txt

made validation fixes for demo site
Update footer.chunk.php

made validation fixes for demo site
Update install.php

replaced invalid code
Merge pull request #169 from bernte/patch-13

Update login.template.php
Merge pull request #170 from bernte/patch-15

Update de.lang.php
Merge pull request #171 from bernte/patch-16

Update de.lang.php
Merge pull request #174 from bernte/patch-19

Update footer.chunk.php
Merge pull request #172 from bernte/patch-17

Update bootstrap.js
Merge pull request #173 from bernte/patch-18

Update 2.page.txt
Merge pull request #176 from bernte/patch-20

Update install.php
Sitemap Errors #175 - fixes
Update actions.php

adding a linebreak for sourcecode after
`
<meta name="generator" content="Powered by Monstra 2.3.0" />`
Merge pull request #177 from bernte/patch-1

Update actions.php
Update Javascript.php

adding a linebreak for sourcecode after <script> ... </script>
Merge pull request #178 from bernte/patch-2

Update Javascript.php
Update login.template.php

added year