Fix for converted leads. refs #133

Something like this should fix #133.

See merge request !44

byte order mark hint for spreadsheets

should fix #162 giving spreadsheets a hint for the encoding of the csv file

See merge request !55

allow sent mails to be filed correctly ref #142

sent things should work like inbound mails

See merge request !56

treat end dates uitype 23 like other dates

should fix #166 allowing end dates to be formatted correctly on reports.

See merge request !57

allow long emails to be stored intact fix #10

this is for inbound emails with a longish body, truncating HTML emails is very messy, so lets give a bit more space to store them.

See merge request !53

only allow logins if the app unique key matches for the session

fixes #56 by checking that the user who has an active session has one valid for this vtiger instance.

See merge request !54

fixes quickcreate field ordering and anything else that needs all the fields for…

… the module in the order they appear on the screen in blocks ref #115

See merge request !36

Localize the installer

This makes it possible for the admin to choose their preferred language in the first step of the installer. That choice applies to the rest of the installation process and is set as the default system language in the config file.

Notes:
 * only the languages with a translated Install.php file will be presented for choosing
 * the locale for the default admin account is still being set to en-US for some reason
 * this doesn't update the templates used in the installer, which aren't fully localizable at the moment.

See merge request !47

fix #125 double save press

See merge request !40

Add lead convert event

we need to know when a lead is converted so we can take various custom actions, but there isn't an event triggered ref #108

See merge request !32

Fix settings links

ref #109 set the linkto field correctly on older migrated systems

See merge request !33

change the default media type to all so that printing is improved ref #127

setting the default media type means that css files get loaded on printing, specific @media changes might be worth doing to improve the printing layout but CSS files  should be loaded by default unless they are explicitly not for a particular media type.

See merge request !41

Fix #126

just a proposal, idea taken from user preference edit js

See merge request !43

removed conditions which checked for a parameter which never existed.

#159

See merge request !51

improved logging, fixes issue #174

See merge request !52

fix #135 set default values on organisations/contacts/opportunities when converting leads

sets the default values for fields before doing the mapped values from the lead conversion mapping.

See merge request !48

fix #124 add to phone lookup table on import

See merge request !42

Use LBL_EQ_ZERO instead of LBL_NO for "No matches" message

There's still one place left where LBL_NO wasn't replaced with LBL_EQ_ZERO.

See merge request !45

Added support for Windows-125* character sets in CSV import.

Excel still does not export CSV as UTF-8, using the 8-bit system character set instead, so support for these charsets comes in handy.
This also updates the `convertCharacterEncoding()` function to be a bit smarter when choosing its backend.

See merge request !46

This makes it possible for the admin to choose their preferred language in the first step of the installer. That choice applies to the rest of the installation process and is set as the default system language in the config file.

Excel still does not export CSV as UTF-8, using the 8-bit system character set instead, so support for these charsets comes in handy.
This also updates the `convertCharacterEncoding()` function to be a bit smarter when choosing its backend.