gitweb: Create Gitweb::View module

gitweb: Create Gitweb::View module

Create Gitweb::View module in 'gitweb/lib/Gitweb/View.pm'
to store the subroutines related to the HTML output
for gitweb.

This module depends on Git.pm, Config.pm, Request.pm,
Escape.pm and RepoConfig.pm. Action specific HTML div
subroutines are not included in this module due to
unmet dependencies of Gitweb::Parse and Gitweb::Format.

Subroutines moved:
	*href
	 get_feed_info
	*chop_str
	 chop_and_escape_str
	*age_class
	 age_string
	*S_ISGITLINK
	 mode_str
	 file_type
	 file_type_long
	*get_page_title
	 git_header_html
	 git_footer_html
	 die_error
	*git_print_page_nav
	 format_paging_nav
	 git_print_header_div
	 git_print_page_path
	*print_local_time
	 format_local_time
	*insert_file
	*git_get_link_target
	 normalize_link_target
	 git_print_tree_entry
	*print_sort_th
	 format_sort_th

Update 'gitweb/Makefile' to install Gitweb::View alongside gitweb.

Signed-off-by: Pavan Kumar Sunkara <pavan.sss1991@gmail.com>