"Enter in replace entry does Replace & Find instead of Replace" setting
in General/Misc/Search.
Rewrite the Txt2tags parser for better conformance and features

This fixes parsing indented titles and titles with embedded delimiter
characters, and adds support for title nesting information.

Syntax: http://txt2tags.org/rules.html

Closes [feature-requests:#690].
Add a Txt2tags test case

From the official docs:
https://txt2tags.googlecode.com/svn/trunk/doc/English/rules.t2t
Add a Txt2tags test case

From the official docs:
https://txt2tags.googlecode.com/svn/trunk/samples/sample.t2t
Add a Txt2tags test case for titles

This is simply extracted from the rules.t2t test, but with unique title
content as the tagmanager removes duplicate tags in tags files.
Force disk check before save to prevent accidental overwriting

Useful e.g. with Save All when the modified file is not the current tab.
Add project prefs for line breaking column & multiline comments
Reformat g_signal_connect calls
Changed wrong translation of identantion

In portuguese, there is no "endentação", but "indentação".
Updated last translator
Reading the config directory from the Windows API instead of GLib

Before we used g_get_user_config_dir() but GLib changed the returned
location in newer versions, so use the Windows API directly
to get the old location, at least for now.
Also add utils_get_user_config_dir() wrapper.

Code is based almost completely on a patch from Matthew.
Remove unused tm_project and all its references in docstrings
Remove unused tm_symbol
Remove unused tm_tagmanager.c
Merge pull request #347 from techee/master

Remove unused tag manager files
Merge pull request #343 from ntrel/more-project-prefs

Add project prefs for line breaking column & multiline comment completion
Merge pull request #342 from ntrel/save-disk-check

Force disk check before save to prevent accidental overwriting
Fix configuration directory location on non-Windows

3e089e4c2c914a4b8885daa65e784a227bd2d6b0 accidentally switched from
`g_get_user_config_dir()` to `g_get_user_data_dir()` as the location
for the user's configuration directory.
Remove unused variable
Fix Windows build