Made INSTALL file version and date independent
Bug 172072 - $title doesn't work in LateX header

In case $title is used in the latex header or footer it is now replaced with the empty string (it was left inside, resulting in non translatable LaTeX code), the documentation has been updated too.

See also:
Bug 668004 - LATEX_HEADER should share common information with HTML_HEADER
Bug 401327 - LATEX_HEADER: $title does not get expanded
Corrected copyright year
Merge pull request #158 from albert-github/feature/bug_copyright

Corrected copyright year
Merge pull request #157 from albert-github/feature/bug_172072

Bug 172072 - $title doesn't work in LateX header
Merge pull request #156 from albert-github/feature/INSTALL

Made INSTALL file version and date independent